The Financial Conduct Authority (FCA) is warning people to beware of people posing as investment advisers and offering to help them set up new schemes via online meeting platforms.

According to a BBC news report, scammers ask their victim to share the screen and enable remote access – which hands over control of their device and, potentially their bank account.

About 2,100 cases have been reported to the FCA since July 2020 and more than £25m was stolen in the 15 months from January 2021.

The FCA said the number of screen-sharing scams it had seen had risen 86% to 683 in the six months from July to December 2021 compared with 367 for the same period the year before.

Screen-sharing has become a familiar part of work life, as people use popular online meeting programmes in their jobs.

Typically in these scams, the victim is persuaded to grant the fraudsters control of their computer, by either expanding permissions or downloading remote access software.

This potentially gives access to sensitive data and even online bank accounts. The scammer can install malware, giving them full access at any time.

The criminals do this under the guise of being helpful – offering to set up a new investment scheme and monitor it.

The BBC reported that one scam victim, who wished to remain anonymous, says she lost thousands of pounds to scammers after trying to find new investments to grow her savings.

She was called by a seemingly legitimate investment company in spring 2021 and told she could see a sizeable return on an initial £250 investment by downloading remote access software and letting the firm do the rest.

They didn’t say [the software] was anything other than an investment tool, and so I had no idea what it would actually do,” she said.

Over the following six months, the woman was encouraged to make more investments – saying graphs and information from scammers saw her “blinded by science”, and led her to believe her investments were paying off.

The scammer drained £48,000 from her pension fundand took out a further £40,000 of loans in her name.

I didn’t know what was happening until it was all gone,” she says.

Mark Steward, executive director of enforcement at the FCA, said: “Investment scams can happen over many months, but sharing your screen without making the proper checks can change everything in an instant.”

If scammers gain control of your computer, it gives them “access to your sensitive banking and investment information, the freedom to browse at their leisure, and the ability to take whatever details they want”, Mr Steward adds.

The FCA’s ScamSmart website has further advice.