Let’s take a deeper look at how this plays out. The defender blocks and then the attacker uses various evasion techniques to slip past the countermeasures.
This turns into an exhausting game of Whac-a-Mole. Yet many bot attacks can evade antibot controls. In 2019, F5 Labs wrote about unwanted bots, the mayhem they cause, and how to detect them. This means that the defenders have no idea or warning about the potential attack until they are already under siege. Often the credentials that attackers hijack were stolen from a completely different site than the one they're used on. Once attackers gain access with stolen credentials, they steal sensitive data or perform an account takeover (ATO) to commit fraud. It is easy to see that unauthorized logins are a significant threat. Also, between 20, the F5 Security Incident Response Team noted increasing incidents of brute force and credential stuffing attacks (41%) in the financial sector.
Our research showed these breaches resulted from stolen login credentials obtained by phishing and brute force as well as stealing credentials elsewhere and using them as part of a credential stuffing attack. In the 2019 Application Protection report, F5 Labs found a majority (51.8%) of breaches in 2019 were caused by access control attacks.
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