![The FCA is keeping a close eye on the use of unauthorised messaging apps in finance as the UK’s largest firms grapple to monitor a pandemic-fuelled spike in the use of WhatsApp and its rivals among employees](https://s.wsj.net/public/resources/images/FN-AN093_FN_wha_M_20210326080808.jpg)
Homebound City workers using WhatsApp, beware: The Financial Conduct Authority is watching you.
The UK’s regulator’s enforcer-in-chief has warned that the FCA is keeping a close eye on the use of unauthorised messaging apps in finance as the UK’s largest firms grapple to monitor a pandemic-fuelled spike in the use of WhatsApp and its rivals Signal and Telegram among employees.