Which? has raised concerns over security vulnerabilities identified in the online banking platforms of certain banks, highlighting the need for urgent action to protect customers from fraud. The consumer watchdog conducted a comprehensive assessment of the security measures employed by 13 current account providers, revealing potential loopholes that could compromise user accounts. TSB and The Co-operative Bank were found to be particularly lacking in their security protocols, while Starling Bank and NatWest/RBS emerged as industry leaders in online security.