Full Report
How IPS adds a potent layer of protection to every endpoint
Analysis Summary
# Main Topic
Intrusion Prevention Systems (IPS) as a potent, proactive layer of protection for endpoints, contrasting its effectiveness against traditional, reactive antivirus (AV) solutions.
## Key Points
- IPS acts as the primary line of defense, stopping attacks *before* they reach the disk, whereas AV detects malware only after it has been dropped or executed.
- Symantec IPS proactively blocks over 95% of visible attacks.
- IPS is capable of detecting and shutting down malware even during the infestation and exfiltration phases as it moves through the network.
- Deploying IPS eliminates the need for costly and time-consuming post-infection remediation efforts.
- IPS provides comprehensive coverage across desktops, servers, and browsers.
- Reviewing audit logs and converting identified potential threats into custom blocking signatures enhances proactive defense capabilities.
## Threat Actors
- No specific threat actor groups or named campaigns were detailed in relation to this defensive mechanism; the focus is on general malware and attack vectors.
- Motivation is characterized by exploitation of known vulnerabilities, particularly on outdated systems.
## TTPs
- **Web-based Attack Delivery:** Utilizing malicious redirects, cryptojacking, phishing scams, and drive-by downloads delivered through web browsers.
- **Exploitation of Known Vulnerabilities:** Frequently targeting End-of-Life (EoL) servers that no longer receive security updates.
- **Lateral Movement/Post-Infection Activity:** Detecting and stopping threats during the "infestation and exfiltration phase."
## Affected Systems
- **Endpoints:** Desktops, laptops, and servers.
- **High Risk Targets:** End-of-Life (EoL) servers, which accounted for 75% of server attacks stopped by Symantec IPS in 2024 (437 million attacks targeting servers stopped in total).
- **Application Vectors:** Web browsers are noted as a common attack vector.
## Mitigations
- **Deployment Priority:** Deploy IPS as the real first line of protection, immediately following the firewall on Windows and Mac clients.
- **Browser Protection:** Enable browser protection through extensions or network-level filtering to block web-based threats in real time.
- **Comprehensive Coverage:** Activate IPS across *all* devices, including servers and desktops, paying special attention to EoL systems.
- **Configuration & Review:** Regularly analyze IPS audit logs and customize signatures to convert identified threats into active blocking rules.
## Conclusion
IPS is established as an essential component of a modern endpoint security strategy, shifting defense from a reactive cleanup model to a proactive blockage model. Organizations must prioritize strategic deployment and fine-tuning (especially concerning browser activity and server coverage) to maximize IPS efficacy and reduce the burden on Security Operations Centers (SOCs).