Encrypted messaging provider Sign mentioned the telephone numbers of one,900 customers can have been printed in a phishing assault on Twilio Inc, its verification services and products supplier, previous this month.
The attacker may just even have accessed the SMS verification code used to check in with Sign, however message historical past, profile knowledge and phone lists weren’t printed, the corporate mentioned in a weblog submit on Monday.
“An attacker can have tried to re-register quantity to every other instrument or realized that their quantity was once registered to Sign,” it mentioned.
Twilio, which disclosed the assault previous this month, mentioned it’s been running at the side of Sign to lend a hand their investigation.
The San Francisco, California-based corporate counts over 256,000 companies, together with Ford Motor Co, Mercado Libre Inc and HSBC, amongst its consumers.
