// Investigation
Detection engineering
Correlation rules evaluated against the event stream. Disabling a rule stops it raising alerts but preserves the alerts it has already produced.
19rules19armed1ATT&CK tactics covered
Rule library
1 of 19 rules shown
| Armed | Rule | Severity | Category | ATT&CK | Alerts |
|---|---|---|---|---|---|
| Deprecated TLS negotiated A session negotiated on TLS 1.0 or 1.1. A hygiene finding rather than an intrusion, but it is how downgrade paths stay open. | Low | Hygiene | T1562Defense Evasion | 0 |