Signal says attackers may have accessed phone numbers of 1,900 users


A woman holds a smartphone displaying the Signal messaging app logo, which is also seen near her, in this illustration taken January 13, 2021. REUTERS/Dado Ruvic

(Reuters) - Encrypted messaging service Signal said the phone numbers of 1,900 users could have been revealed in a phishing attack on Twilio Inc, its verification services provider, earlier this month.

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

"An attacker could have attempted to re-register number to another device or learned that their number was registered to Signal," it said.

Twilio, which disclosed the attack earlier this month, said it has been working together with Signal to help their investigation.

The San Francisco, California-based company counts over 256,000 businesses, including Ford Motor Co, Mercado Libre Inc and HSBC, among its customers.

(Reporting by Tiyashi Datta in Bengaluru; Editing by Aditya Soni)

Article type: free
User access status:
Subscribe now to our Premium Plan for an ad-free and unlimited reading experience!

   

Next In Tech News

Musk's move to close Twitter deal leaves Tesla investors worried
Italy's De Nora teams up with GES on hydrogen battery project
Elon Musk, Twitter have yet to reach deal to end court battle -sources
As EV sales grow, battle over U.S. road weight limits heats up
Spotify acquires firm that detects harmful content
Lawmakers press U.S. Commerce for tougher checks on semiconductor chip subsidies
MENA emerges as world's fastest-growing crypto adopter -study
Dad of two dies after GPS directs him to washed-away bridge, North Carolina family says
Video game maker CD Projekt rises after strategy update, share buyback
Apple will be forced to use new charger after EU votes for USB-C

Others Also Read