A data breach cost the council £20,000 to fix after fears that bank details of employees may have been hacked into.
Council staff discovered the breach on February 3 and found that the financial system had been cloned into a test server, copying sensitive data.
They detected a large amount of hacking activity from overseas IP addresses, which the council’s intrusion system did not pick up.
Read more in the Barking and Dagenham Post.