Signal says attackers may have gained access to phone numbers of 1,900 users

The company said in a blog post on Monday that the attacker could also have accessed the SMS verification code used to register with Signal, but that message history, profile information and contact lists were not disclosed.

“An attacker could try to re-register the number on another device or know that their number was registered Signal,” it said.

twilioThe company, which uncovered the attack earlier this month, said it was collaborating with Signal to aid their investigation.

San Francisco, californiaThe based company counts over 256,000 businesses including Ford Motor Company, Mercado Libre Inc. and HSBC among its clients.

This story has been published without modification in text from a wire agency feed.

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