Silicon Valley Warned Over Tracking Users After AdTech Revamps

Plans by <-bsp-bb-link state="{"bbHref":"bbg://securities/8888000D%20US%20Equity","_id":"0000017d-568a-d108-a5fd-56ef99380000","_type":"0000016b-944a-dc2b-ab6b-d57ba1cc0000"}">Google and other Silicon Valley platforms to rein in intrusive advertising technologies must turn their backs on old tracking practices, the U.K.’s top data-protection watchdog warned.

Google and Apple Inc. have been working on <-bsp-bb-link state="{"bbDocId":"QPEH2XT0G1KZ","_id":"0000017d-568a-d108-a5fd-56ef993a0001","_type":"0000016b-944a-dc2b-ab6b-d57ba1cc0000"}">new privacy features to curb web tracking after antitrust and privacy agencies across the world ratcheted up scrutiny of how tech giants scoop up information from people and businesses using their services.

“The status quo is unacceptable,” Stephen Bonner, executive director at the Information Commissioner’s Office, said in an interview ahead of the release of an ICO opinion paper on the matter. “We’re delighted ...