Ecommerce sites and financial services are the biggest sources of stolen banking information, according to the security firm Kaspersky.
In a global survey of IT professionals half of ecommerce sites and two-fifths of financial services groups reported losing financial data in the last year.
David Emm, senior security researcher at Kaspersky, said: "Online commerce is now a routine part of most people’s lives, and while consumers have a responsibility to protect themselves from cybercrime, they also have a right to expect online retailers to secure their data when held on the company’s systems."
"In particular, we would recommend that these businesses take proactive measures to secure their IT infrastructure, in addition to using specialised protection to secure online transactions."
He added that he was surprised to find only 53% of respondents in ecommerce said they would take every effort to keep anti-fraud measures updated, "the lowest of any business segment and 10 per cent lower than the global average".
When breached the most common response from firm was to secure payment connections, while the rarest response was to provide free or discounted security tools for customers use on their own machines.
