# Nimbus Manticore Uses NightLedger to Turn Systems into Covert Relays

The threat actor known as Nimbus Manticore has deployed a new tool called NightLedger that converts compromised systems into covert communication relays. This technique allows attackers to hide command-and-control traffic and expand their network access stealthily. Security teams must monitor for unusual relay behavior to detect this evolving threat.

**Importance:** 4/5

## Sources

### Security
- [The Hacker News](https://thehackernews.com/2026/07/nimbus-manticore-deploys-nightledger.html) — Tue, 28 Jul 2026 17:25:20 +0530