Question 1

How did the attacker exploit Cysic?

Accepted Answer

The attacker gained unauthorized access to a database supporting the bridge and used a processing flaw to submit a fraudulent mint message, Cysic said.

Question 2

How much did the attacker actually take?

Accepted Answer

About 306.6 ETH, worth ~$727,000 at the October 18 ETH price, after selling 7.2 million CYS.

Question 3

Was the Cysic mainnet affected?

Accepted Answer

No. Cysic said the incident stayed inside the bridge's message processing and minting, and existing user assets were not stolen.

Cysic

Cysic attacker sold 7.2 million CYS before a 76-minute blacklist froze the rest

One sharp brief.
Every day.

Cysic

Cysic attacker sold 7.2 million CYS before a 76-minute blacklist froze the rest

One sharp brief.Every day.

One sharp brief.
Every day.