Encrypted messaging service Sign mentioned the telephone numbers of 1,900 customers might have been revealed in a phishing assault on Twilio Inc, its verification companies supplier, earlier this month.
The attacker might even have accessed the SMS verification code used to register with Sign, however message historical past, profile info, and make contact with lists weren’t revealed, the corporate mentioned in a weblog publish on Monday.
“An attacker might have tried to re-register quantity to a different gadget or discovered that their quantity was registered to Sign,” it mentioned.
Twilio, which disclosed the assault earlier this month, mentioned it has been working along with Sign to assist their investigation.
The San Francisco, California-primarily based firm counts over 256,000 companies, together with Ford Motor Co, Mercado Libre Inc, and HSBC, amongst its prospects.
This story has been printed from a wire company feed with out modifications to the textual content.
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