Signal Argues UK’s Device-Scanning Plan For Nude Images Threatens User Security

Signal, an encrypted messaging service, has taken issue with a recent UK government proposal and says that the UK government’s proposal to force tech companies to scan and search devices for child nude images of people “will not keep children safe” and “endangers us all.”

The program, according to Signal, “endangers us all” and is a dystopian blend of invasive age verification and widespread content monitoring.

The encrypted messaging platform warns that the required technology could later be repurposed for state surveillance or mass censorship. “Forcing all UK residents to prove their age and have their content scanned is a perilous proposition,” Signal stated, noting that such powers are never kept narrow.

Privacy advocates have similarly criticized past UK laws, the Investigatory Powers Act (dubbed the “Snooper’s Charter”) and the Online Safety Act, as enabling surveillance and censorship rather than just protecting children.

The proposal is not yet law. Prime Minister Keir Starmer has given tech companies a three-month ultimatum to act, warning: “If they choose not to, then we will change the law.”

Child protection groups like the NSPCC support the plan, arguing it will prevent harm. The UK government specifically demands Apple and Google block nudity by default across their devices, with adults able to remove the block via age verification.

Signal instead urges public funding for education, social services, and AI safeguards, not surveillance infrastructure “rushed into law under cynical pretexts.” The company has not threatened to leave the UK but has previously considered exiting Sweden and Canada over similar encryption-breaking laws.

The UK government’s proposal from the conflict stems from an ultimatum issued by Prime Minister Keir Starmer and the Home Office to major tech firms such as Apple and Google:

• Three-Month Deadline: Companies have three months to enable operating-system-level safeguards that detect and block nude images from being viewed, shared, or created by children.
• Possible Legislation: If firms do not comply voluntarily, the government threatens to introduce laws mandating the technology.
• Harsh Penalties: Future laws could impose significant financial fines and criminal liability on tech executives who fail to act.

The government defends its stance by citing Internet Watch Foundation data showing that 91% of online child sexual abuse reports in 2024 involved content self-generated by children.

Signal and privacy advocates contend that deploying on-device nudity detection sets a dangerous precedent. As Signal stated on X, the proposal does not protect children but rather undermines everyone’s digital security and privacy by enabling real-time, OS-level content filtering.