This can result in extensive damage and data loss. Unfortunately, an IDS only detects and therefore allows the attack to succeed, while attempting to mitigate it after the event. Using these two methods, an IDS will detect the attack, log the event and create alerts that give administrators visibility into the suspicious event. Some IDS solutions additionally collect protocol samples to conduct heuristic analysis (also known as “rule of thumb”) to detect unknown exploits based on behavioral anomalies. An IDS scans packets and compares them against a signature database of known exploits. To counter application or protocol-based intrusions, security engineers developed the Intrusion Detection System (IDS). Once inside the network, the exploits can result in data loss, account takeover, denial of service, and many other forms of attacks. These exploits would then breach perimeter defenses, as firewalls were incapable of detecting these types of attacks. When compiled, the malicious code was often obfuscated within trusted applications, files, or protocols and disseminated over the internet. Attackers would write malicious code that would exploit these software vulnerabilities. These bugs or vulnerabilities were leveraged to launch sophisticated cyber attacks.

This new exploit was accomplished by finding bugs in enterprise software or in protocols used for communication, such as HTTP, SMTP, FTP, among others. Not long after the Internet was established, attackers discovered a new way to compromise IT assets.

Checkpoint firewalls