Rule History

SID: 2012491 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 10 • Mar 12, 2011, 12:00 PM

Message:

ET USER_AGENTS Suspicious User-Agent (Presto)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (Presto)"; flow:established,to_server; http.user_agent; content:"Opera/10.60 Presto/2.2.30"; http.header_names; content:!"Accept"; classtype:trojan-activity; sid:2012491; rev:10; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2011_03_12, deployment Perimeter, deprecation_reason Relevance, confidence High, signature_severity Major, tag User_Agent, updated_at 2026_05_07;)

Created:

Mar 12, 2011, 12:00 PM

Updated:

May 7, 2026, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 7, 2026, 8:34 PM

Filename:

rules/emerging-user_agents.rules