TSMC Hit by WannaCry Variant

February 27, 2024


The cyber attack on iPhone supplier TSMC was apparently caused by a WannaCry variant, the company has revealed. The severity of the attack caused the company to shut down some of its factories while the issue was fixed, which meant some plants were out of action for days. Although the problem has mostly been rectified now, it says it's still expecting shipments to be delayed for some time.

The virus was injected into TSMC's systems when a supplier reportedly installed infected software onto some of its machines, without running an antivirus scan. The infection then spread to other locations within the company's network in Tainan, Hsinchu and Taichung, which caused the majority of its facilities to close down temporarily.

The attack may have cost the iPhone component manufacturer up to 3% of revenues and could cost Apple over $255M

Incident Date

August 3, 2018



Estimated Cost

up to 3% of TSMC revenue; could cost Apple $255M

Type of Malware

Threat Source

No threat source identified