TECH Signal 554
Online ad giant Adform was hacked, proving once again why ad blockers are needed
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Adform, an online advertising provider serving 1.5 billion ads daily, was compromised and served malicious code that hijacked cryptocurrency wallet addresses from user clipboards.
This incident demonstrates that third-party ad networks remain a viable vector for delivering malware to end-user devices through otherwise trusted websites. For engineers and security teams, it reinforces that blocking third-party ad domains at the network or browser level is a necessary defense against supply-chain compromises. The breach also highlights the ongoing risk of clipboard hijacking for cryptocurrency theft.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
Adform began serving ads containing malicious code on July 27 after a compromise of its ad-loading code.
The malicious code replaced cryptocurrency wallet addresses in a user's clipboard every three seconds with addresses controlled by the attacker.
Adform disclosed the breach but has not yet detailed how the initial compromise occurred or how many users were affected.
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