Category Archives: Security

What Are The Best Defenses Against Ransomware?

Ransomware is a type of malicious software that encrypts files on a victim’s computer and demands payment in exchange for the decryption key. To defend against ransomware, it is important to have a multi-layered defense strategy that includes the following measures:

  1. Backup your data: The most effective defense against ransomware is to regularly back up your data to an external hard drive, cloud storage or another secure location. This way, if your computer is infected with ransomware, you can restore your files without having to pay the ransom.
  2. Keep software up-to-date: Ransomware often exploits vulnerabilities in software to infect a computer. Regularly updating your operating system, web browsers, and other software can help to patch these vulnerabilities.
  3. Use anti-virus software: Install and regularly update anti-virus software to protect against malware, including ransomware.
  4. Use strong passwords: Use strong passwords and enable two-factor authentication on all accounts to prevent unauthorized access.
  5. Be cautious with email and attachments: Be wary of suspicious emails and attachments, and avoid clicking on links or opening attachments from unknown or suspicious sources.
  6. Use a firewall: A firewall can help to block unauthorized access to your computer and protect against ransomware.
  7. Educate yourself: Educate yourself on the latest ransomware threats and best practices for cybersecurity. Stay up-to-date on new threats and trends in the cybersecurity landscape to better protect yourself and your data.

Source:

Text generated by ChatGPT, developed by OpenAI (https://openai.com/) accessed on Feb 19, 2023.

Cybersecurity Outlook in 2023

The world of cybersecurity is constantly evolving, and the outlook for 2023 is no different. As technology continues to advance, so too does the need for increased security measures. With the rise of the Internet of Things (IoT), artificial intelligence (AI), and cloud computing, the need for robust cybersecurity solutions is greater than ever.

The most significant development in the world of cybersecurity in 2023 will be the emergence of quantum computing. Quantum computing is a revolutionary technology that has the potential to revolutionize the way we process data and solve complex problems. With its ability to process data at speeds far beyond what traditional computers can achieve, quantum computing will be a game-changer for cybersecurity.

The use of AI and machine learning will also become increasingly important in the world of cybersecurity. AI and machine learning can be used to detect and respond to cyber threats in real-time, allowing organizations to stay one step ahead of malicious actors. AI and machine learning can also be used to automate many of the mundane tasks associated with cybersecurity, freeing up resources for more important tasks.

The use of blockchain technology will also become increasingly important in the world of cybersecurity. Blockchain technology can be used to create secure, immutable records of transactions and data, making it difficult for malicious actors to tamper with or steal data. Blockchain technology can also be used to create secure networks that are resistant to cyber attacks.

Finally, the use of cloud computing will become increasingly important in the world of cybersecurity. Cloud computing allows organizations to store and process data in the cloud, making it easier to access and manage data from anywhere in the world. Cloud computing also makes it easier to scale up or down depending on the needs of the organization, allowing organizations to save money on hardware and software costs.

Overall, the outlook for cybersecurity in 2023 is very positive. With the emergence of quantum computing, the use of AI and machine learning, the use of blockchain technology, and the use of cloud computing, organizations will have access to powerful tools and technologies that can help them stay one step ahead of malicious actors.

Source:

This content is AI-generated using ChatGPT.

I asked chatGPT to write a blog on Cybersecurity Outlook in 2023. This is the output. Pretty impressive!

Single Sign On (SSO)

Single sign-on (SSO) is an important aspect of access management. It is an authentication method that enables users to securely authenticate with multiple applications and websites by using just one set of credentials – for example, a username and password coupled with multi factor authentication (MFA). This makes life easier for end users since they don’t have to remember multiple passwords. This also provides administrators a centralized way to manage all accounts and govern which users have access to them.

SSO works based upon a trust relationship set up between an application, known as the service provider, and an identity provider. This trust relationship is often based upon a certificate that is exchanged between the identity provider and the service provider. This certificate can be used to sign identity information that is being sent from the identity provider to the service provider so that the service provider knows it is coming from a trusted source. In SSO, this identity data takes the form of tokens which contain identifying bits of information about the user like a user’s username.

Advantages of SSO include the following:

  • Users need to remember and manage fewer passwords and usernames for each application.
  • The process of signing on and using applications is streamlined — no need to reenter passwords.
  • Fewer complaints or trouble about passwords for IT helpdesks.

Disadvantages of SSO include the following:

  • An attacker who gains control over a user’s SSO credentials is granted access to every application the user has rights to, increasing the amount of potential damage.
  • It does not address certain levels of security each application sign-on may need.
  • If availability is lost, users are locked out of all systems connected to SSO.

Sources:

https://www.techtarget.com/searchsecurity/definition/single-sign-on

https://www.onelogin.com/learn/how-single-sign-on-works

OWASP API Security Top 10

What is an API?

An application programming interface, or API, enables companies to open up their applications’ data and functionality to external third-party developers and business partners, or to departments within their companies. This allows services and products to communicate with each other and leverage each other’s data and functionality through a documented interface.

What is API Security?

Digital transformation is driving API adoption. APIs are the core of service-oriented and microservices architectures. They power mobile, web applications, SaaS and IoT devices. They can be found in customer-facing, partner-facing and internal applications. APIs expose application logic and sensitive data such as Personally Identifiable Information (PII) to business partners and customers. Because of this, APIs have increasingly become a target for attackers.

API Security focuses on strategies and solutions to understand and mitigate the unique vulnerabilities and security risks of Application Programming Interfaces (APIs).

What are the OWASP API Security Top 10?

Here are the 2019 API Security top 10 and their mitigations:

  • API1:2019 Broken Object Level Authorization APIs tend to expose endpoints that handle object identifiers, creating a wide attack surface Level Access Control issue. Object level authorization checks should be considered in every function that accesses a data source using an input from the user. Read more.
  • API2:2019 Broken User Authentication Authentication mechanisms are often implemented incorrectly, allowing attackers to compromise authentication tokens or to exploit implementation flaws to assume other user’s identities temporarily or permanently. Compromising a system’s ability to identify the client/user, compromises API security overall. Read more.
  • API3:2019 Excessive Data Exposure Looking forward to generic implementations, developers tend to expose all object properties without considering their individual sensitivity, relying on clients to perform the data filtering before displaying it to the user. Read more.
  • API4:2019 Lack of Resources & Rate Limiting Quite often, APIs do not impose any restrictions on the size or number of resources that can be requested by the client/user. Not only can this impact the API server performance, leading to Denial of Service (DoS), but also leaves the door open to authentication flaws such as brute force. Read more.
  • API5:2019 Broken Function Level AuthorizationComplex access control policies with different hierarchies, groups, and roles, and an unclear separation between administrative and regular functions, tend to lead to authorization flaws. By exploiting these issues, attackers gain access to other users’ resources and/or administrative functions. Read more.
  • API6:2019 Mass Assignment Binding client provided data (e.g., JSON) to data models, without proper properties filtering based on an allowlist, usually leads to Mass Assignment. Either guessing objects properties, exploring other API endpoints, reading the documentation, or providing additional object properties in request payloads, allows attackers to modify object properties they are not supposed to. Read more.
  • API7:2019 Security Misconfiguration Security misconfiguration is commonly a result of unsecure default configurations, incomplete or ad-hoc configurations, open cloud storage, misconfigured HTTP headers, unnecessary HTTP methods, permissive Cross-Origin resource sharing (CORS), and verbose error messages containing sensitive information. Read more.
  • API8:2019 Injection Injection flaws, such as SQL, NoSQL, Command Injection, etc., occur when untrusted data is sent to an interpreter as part of a command or query. The attacker’s malicious data can trick the interpreter into executing unintended commands or accessing data without proper authorization. Read more.
  • API9:2019 Improper Assets Management APIs tend to expose more endpoints than traditional web applications, making proper and updated documentation highly important. Proper hosts and deployed API versions inventory also play an important role to mitigate issues such as deprecated API versions and exposed debug endpoints. Read more.
  • API10:2019 Insufficient Logging & Monitoring Insufficient logging and monitoring, coupled with missing or ineffective integration with incident response, allows attackers to further attack systems, maintain persistence, pivot to more systems to tamper with, extract, or destroy data. Most breach studies demonstrate the time to detect a breach is over 200 days, typically detected by external parties rather than internal processes or monitoring. Read more.

Sources:

https://owasp.org/www-project-api-security/

https://www.ibm.com/cloud/learn/api

Cybersecurity Top Defenses

Majority of ramsomware and cyberattacks stem from phishing, social engineering, unpatched software and weak passwords. Mitigating these cover more than 80% of your cybersecurity defenses. Here are the three top defenses that you should prioritize right away to minimize your cybersecurity risk:

  1. Mitigate Social Engineering
    1. Educate your users about cybersecurity on a regular basis. Use creative ways for them to get engaged
    2. Codify security policies and make sure to enforce them.
    3. Use technical defenses such as screening out phishing emails from your email system. A useful anti-phishing guide can be obtained from this website: https://info.knowbe4.com/comprehensive-anti-phishing-guide
  2. Patch your Operating Systems, application software, firmware, and appliances.
    1. Review vulnerabilities and patch your software regularly. Patches for critical vulnerabilities should be applied as soon as possible.
    2. Be aware of current threats and work with your vendor to obtain security patches. Use the following website to check known exploited vulnerabilities and mitigate them right away: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
  3. Use Multifactor Authentication (MFA)
    1. Even if cyber criminals are able to obtain your users’ passwords, an MFA using a second source of authentication will be able to prevent attack.
    2. At the very least, set an enforceable policy for your users to use unique, 12-char fully random, unguessable passwords.

What is CVE and how is it used?

Common Vulnerabilities and Exposures (CVE), is a list of publicly disclosed computer security flaws. When someone refers to a CVE, they mean a security flaw that’s been assigned a CVE ID number.

The goal of CVE is to make it easier to share information about known vulnerabilities so that cybersecurity strategies can be updated with the latest security flaws and security issue. CVEs help vendors, developers, security and IT professionals coordinate their efforts to prioritize and address these vulnerabilities to make computer systems more secure.

CVE was launched in 1999 by the MITRE corporation to identify and categorize vulnerabilities in software and firmware. CVE provides a free dictionary for organizations to improve their cybersecurity. MITRE is a nonprofit that operates federally funded research and development.

A CVE entry describes a known vulnerability or exposure. Each CVE entry contains a standard identifier number with status indicator (i.e. “CVE-1999-0067”, “CVE-2014-12345”, “CVE-2016-7654321”), a brief description and references related vulnerability reports and advisories.

Each CVE ID is formatted as CVE-YYYY-NNNNN. The YYYY portion is the year the CVE ID was assigned or the year the vulnerability was made public.

Unlike vulnerability databases, CVE entries do not include risk, impact fix or other technical information.

Sources:

https://en.wikipedia.org/wiki/Common_Vulnerabilities_and_Exposures

https://www.upguard.com/blog/cve

https://www.redhat.com/en/topics/security/what-is-cve

Cyber Resiliency Engineering Framework

Cyber resiliency engineering intends to architect, design, develop, implement, maintain, and sustain the trustworthiness of systems with the capability to anticipate, withstand, recover from, and adapt to adverse conditions, stresses, attacks, or compromises that use or are enabled by cyber resources. From a risk management perspective, cyber resiliency is intended to help reduce the mission, business, organizational, enterprise, or sector risk of depending on cyber resources.

NIST has published Special Publication (SP) 800-160 Volume 2, Revision 1, Developing Cyber-Resilient Systems: A Systems Security Engineering Approach. It presents a cyber resiliency engineering framework to aid in understanding and applying cyber resiliency, a concept of use for the framework, and the engineering considerations for implementing cyber resiliency in the system life cycle. The framework constructs include goals, objectives, techniques, implementation approaches, and design principles. Organizations can select, adapt, and use some or all of the cyber resiliency constructs in this publication and apply the constructs to the technical, operational, and threat environments for which systems need to be engineered.

The guidance helps organizations anticipate, withstand, recover from, and adapt to adverse conditions, stresses, and compromises on systems – including hostile and increasingly destructive cyber-attacks from nation-states, criminal gangs, and disgruntled individuals.

Sources:

https://csrc.nist.gov/News/2021/revised-guidance-for-developing-cyber-resiliency
https://csrc.nist.gov/publications/detail/sp/800-160/vol-2-rev-1/final
https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-160v2r1.pdf

Quantum Computing and Encryption

Quantum computing, the next generation of computing, has been in development for the past several years and most likely will reach its full potential in the next several years.

Quantum computing harnesses the laws of quantum mechanics to solve problems too complex for today’s computers. It uses qubits (CUE-bits) to run multidimensional quantum algorithms. It is capable of solving certain computational problems substantially faster than today’s computer, such as integer factorization, which is the underlying technology of RSA encryption.

RSA encryption, alongside elliptic-curve cryptography are widely used today to encrypt our financial transactions on the web and keep intellectual property, military, and medical data secret. When quantum computers become available, these defenses will fail and data will be exposed. It will only take several hours for quantum computers to decrypt the current RSA encryption standard.

To this end, computer scientist have been working hard towards creating a “post-quantum cryptography” (PQC) encryption protocols that should outpace the capability of quantum computers. The National Institute of Standards and Technology (NIST) researchers have been working for years and recently have given their stamp of approval to some mathematical equations that quantum computers would struggle to hack. In 2016 it launched a competition to find algorithm for PQC, receiving 82 submissions from 25 countries. After three rounds of sifting and analysis, four winning techniques and four backup approaches have emerged.

NIST recommends two primary algorithms to be implemented for most use cases: CRYSTALS-KYBER (key-establishment) for general encryption and CRYSTALS-Dilithium for digital signatures. In addition, the signature schemes FALCON and SPHINCS+ will also be standardized.

More information on these PQC algorithms can be found on NIST website:

https://csrc.nist.gov/News/2022/pqc-candidates-to-be-standardized-and-round-4

Sources:
https://www.ibm.com/topics/quantum-computing
https://en.wikipedia.org/wiki/Quantum_computing
https://www.economist.com/science-and-technology/2022/07/13/how-to-preserve-secrets-in-a-quantum-age

Zero Trust Security

Zero Trust security is an IT security framework that requires all users and devices, whether in or outside the organization’s network perimeter, to be authenticated, authorized, and continuously validated before being granted or keeping access to applications and data. In a traditional IT network, it is hard to obtain access from outside the network, but once inside the network, everyone is trusted by default whereas a Zero Trust model trusts no one and nothing. The problem with traditional IT network is that once an attacker gains access to the network, they have free rein over everything inside.

The main principle of Zero Trust security are the following:

  1. Least privilege access. Give users only only the bare minimum level of access necessary to perform job-specific tasks. This will minimize each user’s exposure to sensitive parts of the network.
  2. Continuous monitoring and validation. Verify users and devices identity and privileges continuously and time out logins and connections periodically once established.
  3. Device access control. Ensure that every device in the network is authorized, and assess all devices to make sure they have not been compromised.
  4. Terminate every connection. Allow an inline proxy architecture to inspect all traffic, including encrypted traffic, in real time — before it reaches its destination — to prevent ransomware and malware.
  5. Microsegmentation. Break up security perimeters into small zones to maintain separate access for separate parts of the network.
  6. Multi factor authentication (MFA). Require users at least 2 sources of evidence to identify themselves. For example, in addition to entering a password, users must also enter a code sent to another device, such as a mobile phone, thus providing two pieces of evidence that they are who they claim to be.
  7. Prevent lateral movement. “Lateral movement” is when an attacker moves within a network after gaining access to that network. Zero Trust is designed to contain attackers so that they cannot move laterally. Once the attacker’s presence is detected, the compromised device or user account can be quarantined and cut off from further access.

These principles will reduce the organization’s security risk by minimizing or even eliminating the attack surface.

Sources:

https://www.cloudflare.com/learning/security/glossary/what-is-zero-.trust/

https://www.crowdstrike.com/cybersecurity-101/zero-trust-security/

https://www.zscaler.com/resources/security-terms-glossary/what-is-zero-trust

Top 10 AWS Security Tools

AWS has 20+ security tools and services that you can use to secure your data and applications in AWS cloud. These tools and services cover your data protection needs, identity and access management, network and application protection, threat detection and monitoring, and compliance and data privacy.

The following ten security tools are the most useful services that you should start using to improve your security posture:

  1. AWS Security Hub is a cloud security posture management service that performs security best practice checks, aggregates alerts, and enables automated remediation. It quickly assesses your high-priority security alerts and security posture across AWS accounts in one comprehensive view.
  2. AWS Identity and Access Management (IAM) provides fine-grained access control across all of AWS. With IAM, you can specify who can access which services and resources, and under which conditions. With IAM policies, you manage permissions to your workforce and systems to ensure least-privilege permissions. AWS IAM also has multi-factor authentication and supports single sign-on (SSO) access to further secure and centralize user access.
  3. AWS GuardDuty is a threat detection service that continuously monitors your AWS accounts and workloads for malicious activity and delivers detailed security findings for visibility and remediation.
  4. AWS Macie is a fully managed data security and data privacy service that uses machine learning and pattern matching to discover and protect your sensitive data in AWS. Macie automatically provides an inventory of Amazon S3 buckets including a list of unencrypted buckets, publicly accessible buckets, and buckets shared with AWS accounts, then it applies machine learning and pattern matching techniques to the buckets you select to identify and alert you to sensitive data, such as personally identifiable information (PII). 
  5. AWS Config is a service that enables you to assess, audit, and evaluate the configurations of your AWS resources. Config continuously monitors and records your AWS resource configurations and allows you to automate the evaluation of recorded configurations against desired configurations. With Config, you can review changes in configurations and relationships between AWS resources, dive into detailed resource configuration histories, and determine your overall compliance against the configurations specified in your internal guidelines. This enables you to simplify compliance auditing, security analysis, change management, and operational troubleshooting.
  6. AWS CloudTrail monitors and records account activity across your AWS infrastructure, giving you control over storage, analysis, and remediation actions. You can view and search these events to identify unexpected or unusual requests in your AWS environment.
  7. AWS Shield is a managed Distributed Denial of Service (DDoS) protection service that safeguards applications running on AWS. AWS Shield provides always-on detection and automatic inline mitigations that minimize application downtime and latency.
  8. Amazon Inspector is an automated vulnerability management service that continually scans AWS workloads for software vulnerabilities and unintended network exposure. These assessments include network access, common vulnerabilities and exposures (CVEs), Center for Internet Security (CIS) benchmarks, and common best practices such as disabling root login for SSH and validating system directory permissions on your EC2 instances.
  9. AWS WAF is a web application firewall that helps protect your web applications or APIs against common web exploits and bots that may affect availability, compromise security, or consume excessive resources. AWS WAF gives you control over how traffic reaches your applications by enabling you to create security rules that control bot traffic and block common attack patterns, such as SQL injection or cross-site scripting. You can also customize rules that filter out specific traffic patterns.
  10. AWS Audit Manager helps you continuously audit your AWS usage to simplify how you assess risk and compliance with regulations and industry standards. Audit Manager automates evidence collection to reduce the “all hands on deck” manual effort that often happens for audits and enable you to scale your audit capability in the cloud as your business grows.

Source:

https://aws.amazon.com/products/security/