79thVault Operator Key Compromise

On October 7, 2026, 79thVault lost approximately $12.5 million after an attacker gained control of the project's operator private key and abused a privileged role in the 79AU token contract to drain its liquidity. The team said the key was exposed through a flaw in its account-permission management; investigators could not immediately rule out insider involvement.

What happened

The compromised wallet held the OPERATOR_ROLE permission on the 79AU token. The attacker moved roughly 2.01 million 79AU out of the project's PancakeSwap pool and called sync() to force the pool to re-read its manipulated reserves. They then executed around 95 swaps selling 79AU back into the 79AU/USDT pair, draining the pool's USDT reserve from about $15.2 million to $3.9 million and cashing out roughly 16,249 BNB (~$12.5 million). On-chain monitors flagged a cluster of suspicious transfers moving tokens to an external address over about an hour.

Aftermath

• The operator permission was revoked and the affected contract operations were patched after the drain.
• Security trackers (PeckShield, CertiK) reported that most of the stolen BNB remained at an associated address.
• The attacker subsequently returned 15,000 BNB (~$11.1 million) to a team-designated wallet, and 79thVault proposed a white-hat settlement under its bug-bounty framework; negotiations continued thereafter.

Why it matters

The 79thVault drain is a textbook privileged-role key compromise: no contract bug was exploited, but a single leaked operator key with mint/drain-class authority over a live pool was enough to empty it — the same failure mode behind Ankr/Helio and Gala Games. It also reinforces a recurring catalogue theme: when funds stay on an identifiable, unlaundered address, the bounty-return outcome increasingly dominates — as with 1inch. Operator and admin roles should sit behind multisig or timelocks, not a single hot key.