Synopsys Denies Data Breach After D1R Ransomware Claim

Synopsys is a major supplier of electronic design automation software and semiconductor intellectual property, making the security of its systems important to chip developers and the wider technology supply chain. Ransomware group D1R has claimed it breached the company and stole corporate customer data and intellectual property, allegations that could raise concerns over confidential designs and research if substantiated.

As of July 21, 2026, Synopsys said monitoring and an investigation had found no evidence of unauthorized access to its systems or signs that data had been leaked. The company’s denial leaves D1R’s claims unverified, while a cybersecurity news outlet said the available evidence suggested the group may be bluffing. No confirmed volume of stolen data, ransom demand or specific affected customers has been disclosed.