Ransomware attack at Comparis resulted in data breach

SwissInfo.ch reports:

Last Wednesday Comparis.ch, which has 80 million visits a year, was shut down by ransomware attackers demanding $400,000 (CHF370,000) in cryptocurrencies to put it back online. By Friday the website was operational again. A Comparis spokesman told SWI swissinfo.ch that no ransom had been paid.

The company initially said it believed that no customer data had been breached. However, on Wednesday, a week after the attack, Zurich cantonal police said detailed analyses had shown that the perpetrators of the attack had access to certain internal customer data belonging to Comparis.

Read more on SwissInfo.ch

Further research reveals that Grief threat actors added Comparis to their leak site on July 12. The proof of claims archive contains 189 files consisting of a mix of old files and more recent ones.

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