AppCheck Security Blog

Brute Force Attacks

Brute force attacks are those attacks that rely purely on exhaustive effort rather than sophisticated techniques performed. They are used by attackers in several cybersecurity spheres including against encryption and authentication systems. We look at then different types of brute force attacks and the ways in which they can be avoided.

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Brute Force Attacks

Brute force attacks are those attacks that rely purely on exhaustive effort rather than sophisticated techniques performed. They are used by attackers in several cybersecurity spheres including against encryption and authentication systems. We look at then different types of brute force attacks and the ways in which they can be avoided.

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Filepath Manipulation

In this blog post, we look at how filepath manipulation can occur at a technical level, at how attackers may seek to exploit such vulnerabilities, and at how developers and system administrators within an organisation can best guard against falling victim to such exploits.

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Cookie Security

In this blog post we will review what cookies are, why cookies are needed at all, how cookies work, the weaknesses that cookies can be prone to both inherently as well as if implemented incorrectly, and how both website operators and general web users can help to ensure their secure implementation and usage.

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DNN CMS Server-Side Request Forgery (CVE-2021-40186)

The AppCheck research team identified a Server-Side Request Forgery (SSRF) vulnerability within the DNN CMS platform, formerly known as DotNetNuke.  SSRF vulnerabilities allow the attacker to exploit the target system to make network requests on their behalf, allowing a range of possible attacks. In the most common scenario, the attacker exploits SSRF vulnerabilities to attack systems behind the firewall and access sensitive information from Cloud Provider metadata services.

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Privilege Escalation

his blog post looks in more detail at how privilege escalation can occur, as well as highlighting some common variants and also how to best prevent or avoid them from happening.

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Honeypots

One tool that is often overlooked despite a history of deployment stretching back over thirty years is the honeypot, a deployed resource that is used to monitor and analyse attacks against a network, as well as reveal information about the attackers behind them. In this blog post we examine exactly what honeypots are and how they work, and whether they could benefit your organisation.

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DOM XSS

“DOM” stands for “Document Object Model” and although you may not have heard of it, it underpins how every web browser interprets and renders web pages that are received from the server.

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“NginxDay”: NGINX LDAP Reference Implementation Zero Day Vulnerability

A recent zero-day vulnerability has been publicly shared revealing a critical issue with the nginx-ldap-auth software package allowing attackers to potentially bypass authentication and disclose key information on vulnerable servers.

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Web Server and Web Application Hardening

System hardening is the practice of securing a computer system by minimising its attack surface. Measures used can include the uninstallation of unneeded or unused software, especially those which run a network service, and the changing of various system or application settings from flexible default values to more secure values

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30 Cyber Security Terms You Need To Know

We lay out some of the more common terminology that you may encounter and explain both the meaning of each, as well as its relevance to protecting your technical estate from cybersecurity threats.

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