The UK’s banks are regularly being caught out by cybercriminals, BBC research suggests.
Data from three sources indicates that spam, viruses and other malicious messages regularly emerge from machines sitting on banks’ corporate networks.
It is likely that the computers were compromised when bank staff and contractors were caught out by booby-trapped email attachments.
They may also have visited sites seeded with code that infected their PCs.
Some of those infected machines are also likely to have been enrolled in a botnet – a large network of hijacked computers that are used by cybercriminals to distribute spam and viruses, attack other websites or as a source of saleable personal data.
But, say experts, banks are doing a better job than most at protecting their machines from malware.