IoT Forensic
Introduction: The Internet of Things (IoT) has rapidly spread into our homes, workplaces, cities, and industries over the past decade. IoT devices like smart home assistants, connected security cameras, wearable ...
Digital Forensics Anjali Singhal todayMarch 12, 2024
Cybersecurity plays an essential role in today’s interconnected digital world. Malicious agents’ techniques for breaking into systems and damaging confidential information are changing along with technology. The brute force attack is one such technique that is still widely used. In this blog, we’ll delve into what brute force attacks are, explore their various types, and discuss effective countermeasures to safeguard against them.
These types of attacks tend to target at password-protected accounts. To obtain unauthorized access to a user’s account, the attacker uses software that generates a series of successive attempts. Simple, short passwords are particularly vulnerable to brute force assaults if they are not shielded by other security measures like account lockout policies that expire after a set number of unsuccessful tries or CAPTCHAs, which prevent automated submissions. However, since the number of possible combinations that the attacker’s software must evaluate grows rapidly, brute force attacks become more difficult as password complexity increases.
This is the simplest version, in which the attacker manually attempts to guess the password by entering different letter, number, and symbol combinations. It is time-consuming and inefficient, but surprisingly effective against weak, predictable passwords like “123456” or “password123”.
Dictionary attacks use pre-made lists of frequently used words, phrases, variations, and compromised passwords in place of random guesses. These lists can be quite long and modified based on the activities or background of the person who will be receiving them. Dictionary attacks are far quicker and more effective than simple brute force, particularly when used against users who repeat passwords for many accounts.
This combines dictionary attacks with the brute-force method. It starts with a smaller list of common passwords and then expands it with character substitutions, variations, and dictionary entries. This increases the attack’s target while maintaining its focus on popular password combinations.
In this case, the attacker is already aware of certain details about the password, such as its length or the characters that have been used. Based on this information, they then create targeted lists, which significantly decrease the number of possibilities and boost the attack’s speed and success rate.
This involves attempting various username and password pairs that have been compromised or released through data breaches on several platforms. Attackers take advantage of the fact that a lot of people share login credentials between accounts. Automated credential stuffing is very successful, especially when used against platforms with weak login security.
These attacks use pre-computed hashes of common passwords and then compare them to the hashed password of the target system. A successful match discovers the matching password in the rainbow table without revealing the password itself. Although creating and storing the rainbow tables takes a lot of resources, this can be faster than brute-forcing the password itself.
Password spraying relies on a single, common password against a large number of accounts, as compared to targeting each account individually. This aims to exploit weak password policies or password reuse across different platforms. While less targeted, it can effectively identify vulnerable accounts and gain access to multiple systems at once.
One prominent method for remote computer access is Remote Desktop Protocol, or RDP. Brute force tactics can be used by attackers to guess RDP login credentials and obtain access to the remote system without permission. This might serve as an entry point to further attacks on the system’s data or network.
Written by: Anjali Singhal
Tagged as: Hash Collision, Login brute force, Rainbow Tables, Password spraying, Network Security, Weak authentication, Intrusion Detection, Two-factor authentication bypass, Password Cracking, Dictionary-based attack, Brute force, Web application security, Dictionary attack, SQL injection, Credential stuffing, Reverse engineering, Excessive login attempts, Malicious software, Automated password guessing, Session hijacking, Authentication bypass, Penetration testing.
Introduction: The Internet of Things (IoT) has rapidly spread into our homes, workplaces, cities, and industries over the past decade. IoT devices like smart home assistants, connected security cameras, wearable ...
Digital Forensics Anjali Singhal
Digital Forensics Anjali Singhal / May 20, 2024
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