Troubleshooting Common Issues in Comodo Internet Security Pro

Comodo Internet Security Pro vs Competitors: Which Is Best for You?

Best for cautious users who want strong isolation and low false positives: Comodo Internet Security Pro (unique Default‑Deny containment + HIPS).
Best for top independent‑lab protection and broad feature set: Bitdefender / Kaspersky / Norton.
Best for lowest system impact or budget: Avast / AVG / Microsoft Defender (good free options).
Best for lightweight, expert customization: ESET. Choose Comodo if you prioritize application containment and preventing unknown/zero‑day code via sandboxing; choose a top lab‑ranked product if raw detection rates, anti‑ransomware rollback, and integrated extras (VPN, password manager) matter more.

Attribute	Comodo Internet Security Pro	Bitdefender / Kaspersky / Norton	Avast / AVG / Microsoft Defender	ESET
Core detection (lab scores)	Good to mixed — reputable in some tests but not top‑ranked consistently	Top scorers in AV‑TEST / AV‑Comparatives	Strong at times; varies by test	Very good, consistent
Zero‑day / unknown protection	Default‑Deny + containment (sandboxing) + HIPS) — strong at blocking unknown/ fileless threats	Uses advanced heuristics, machine learning, cloud lookups	Cloud reputation + heuristics; less containment focus	Strong behavioral detection, low false positives
False positives	Typically low when tuned; containment reduces risk of blocking needed apps	Low but varies by vendor updates	Varies; some products produce more FP	Low
System impact / performance	Moderate — containment and HIPS add background work	Varies; Bitdefender and Norton optimized for low impact	Avast/AVG and Defender often show low impact	Low to moderate
Extra features (VPN, backup, password manager)	Basic extras; focus is security primitives; some paid