Signal president Meredith Whittaker has defended the platform’s security after senior Trump administration officials mistakenly included a journalist in a private Signal group chat discussing U.S. military action against Yemen’s Houthis.
Although Whittaker did not directly address the national security blunder — which Democratic lawmakers have condemned as a serious breach — she posted on X describing Signal as the “gold standard in private comms,” and highlighted the app’s security advantages over Meta’s WhatsApp.
“We’re open source, nonprofit, and we develop and apply end-to-end encryption and privacy-preserving tech across our system to protect metadata and message contents,” Whittaker wrote.
Signal has seen steady growth in both Europe and the U.S., increasingly used as a secure alternative to WhatsApp. Data from market intelligence firm Sensor Tower shows Signal downloads in the U.S. rose 16% in the first quarter of 2025 compared to the previous quarter, and 25% compared to the same period last year.
In a recent interview with Dutch newspaper De Telegraaf, Whittaker criticised WhatsApp’s collection of metadata, warning it could reveal who communicates with whom and how often — and be shared with authorities if compelled.
In response, a WhatsApp spokesperson said the platform relies on metadata to combat spam and prevent abuse, but stressed it does not keep logs of who messages whom or track personal conversations for advertising purposes.
The incident has renewed attention on how encrypted platforms are used by governments — and how easily operational security can still be compromised.
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