What are attack vectors?

From phishing emails to unpatched vulnerabilities, attack vectors pose significant threats to human and non-human identities (NHIs), making their identification and mitigation paramount for organizations. So, what are attack vectors, exactly?

What is an attack vector?

Attack vectors represent the various techniques and vulnerabilities that cybercriminals exploit to breach security defenses. These pathways allow attackers to infiltrate systems, networks, or applications, potentially leading to data theft, system compromise, or service disruption.

It also helps us differentiate attack vectors from the broader concept of attack surface. While the former refers to specific attack routes, the NHI and secret attack surface encompasses all potential vulnerabilities within a system. Imagine a fortress: attack vectors are the weak points in its defenses, while the attack surface is the entire outer wall.

Furthermore,  attack vectors take on heightened significance in secrets and non human identity management. NHIs, such as service accounts, APIs, and automated processes, often have privileged access to critical systems and data. They are a huge target as they can provide a direct path to valuable assets. To that end, common targets include network infrastructure, applications, and APIs, among other entities that grow insecure.

What are the different types of attack vectors?

Attack vectors can be broadly categorized into two main types: passive and active attacks. Each type has its characteristics and methods of exploitation.

Passive Attack Vectors

These involve the attacker monitoring or collecting information from a system without directly interacting with it or causing any changes. The ‘attacks’ here are often harder to detect as they don’t leave readily obvious traces. Examples:

1. Traffic analysis: By observing network traffic patterns, attackers can gather intelligence about system operations and potential weaknesses.
2. Port scanning: Attackers scan networks for open ports to identify potential vulnerabilities, including exposed services using non-human identities.
3. External system analysis: Observing and analyzing external-facing systems and APIs to gather information about non-human identities and their potential vulnerabilities.
4. Footprinting: Mostly considered an ethical hacking maneuver, footprinting gathers information about a target network or system to create a map of its structure, NHIs in use, and potential vulnerabilities.

Active Attack Vectors

Active attack vectors involve direct attempts to exploit vulnerabilities, disrupt systems, or gain unauthorized access. These attacks are generally more noticeable and can cause immediate damage. Common active attack vectors include:

1. Malware: Deploying viruses, worms, trojans, or other malicious software to compromise systems.
2. Credential stuffing: Automated attempts to access accounts, including non-human identities, using stolen pairs of usernames and passwords.
3. Phishing: Tricking users into revealing sensitive information through fraudulent emails or websites.
4. SQL injection: Exploiting vulnerabilities in database queries via the placement of malicious code in the data plane to manipulate or extract data.
5. Denial of Service (DoS): Overwhelming a system or network to render it unusable for intended users.
6. Man-in-the-Middle (MitM): Intercepting and potentially altering communications between two parties may include non-human identity authentication processes.
7. Service account compromise: Gaining control over accounts used for automated processes, which often have elevated privileges.
8. API key exposure: Unauthorized access to API keys, potentially leading to data breaches or service abuse.
9. Exploitation of unpatched vulnerabilities: Taking advantage of known but unpatched secrets security flaws in systems or applications, which may affect non-human identity management.

How to secure attack vectors?

While it might be quite far-fetched to think we can get rid of attack vectors altogether, for sure, there are certain steps we can take to keep them in check:

1. Access management and strong authentication

Follow the principle of least privilege and apply it across all channels. For human users, enforce Multi-Factor Authentication (MFA), and for non-human identities, implement Just-In-Time (JIT) access, providing temporary, limited-scope permissions only when needed.

2. Utilize secrets management solutions

Deploy robust secrets management tools, including secure vaults and scanners like Entro to centralize, encrypt secrets, and control access to non-human identities.

3. Maintain regular updates and patches

Consistently update and patch all systems, applications, and dependencies. This practice closes known vulnerabilities that attackers might exploit.

4. Establish continuous monitoring and alerting

Rely on real-time monitoring systems from solutions such as Entro to detect anomalous behavior related to non-human identities. You will receive alerts for unusual access patterns, unexpected privilege escalations, or out-of-ordinary data transfers. Furthermore, since alerts rely on logs to a great extent, it’s a good practice to frequently audit and review access logs, activity trails, and configuration settings.

5. Implement network segmentation

Divide your network into separate segments or subnetworks. This approach limits the potential spread of an attack and provides better control over non-human identity access across different network areas.

Following the least privilege principle and regular audits form the foundation of a healthy attack vector framework for cybersecurity, which hints at how this isn’t a one-time effort but an ongoing process. To that end, we must foster a culture of cybersecurity awareness since attack vectors keep evolving. Click here to learn more about how Entro can help.