Some companies still prefer to hush up electronic crime rather than help solve it, according to the National High Tech Crime Unit (NHTCU).
Although most businesses have co-operated with police to reduce computer-based crime, many pull out before prosecution, according to John Lyons, crime reduction co-ordinator at the NHTCU.
But the unit claims some major successes and has built a team of expert data analysts who specialise in retrieving information from suspect's hard drives.
"We are not going to win the war against e-crime unless we share intelligence," said Lyons. "Certain types of criminal, like extortionists, thrive on anonymity but e-crime does leave evidence.
"Our boys can recover the evidence they need from the computer hardware used. The only way to stop them is to take a sledgehammer to your hard drive, douse it in turps and get out the matches."
Lyons outlined a series of examples of e-crime to demonstrate the new methods being used to carry out traditional crimes.
He identified website spoofing as a major problem for UK financial companies. The unit receives almost daily calls from companies whose sites had been copied in this way.
The scam involves a fraudster setting up a website with a similar URL to a legitimate site, and then harvesting access codes from users who try to log on.
Eastern European gangs are also using e-government services to try and defraud the benefits system with phantom claimants or multiple payments to a single source.
"We'd usually advise clients to co-operate fully with the NHTCU," said Mark Smith, a solicitor at Morgan Cole specialising in e-crime.
"Although there are few crimes with a legal requirement to tell the police it makes sense in most cases.
"The NHTCU Confidentially Charter has been a great step forward in helping companies get the confidence to do this."
Lyons also explained how the NHTCU has a team in place to help companies with their media profiles when dealing with e-crime.
In the event of a prosecution the unit's PR staff work to avoid leaks and build a positive image of companies helping police with enquiries.
US space agency believes the crater could have preserved ancient organic molecules from the water that flowed there billions of years ago
Valve quietly closes down hardware initiatives launched following Windows 8
Scientists create a virtual reality simulation of a black hole sitting at the centre of the Milky Way
Simulations like this can help people understand complicated systems in the universe in a better way
The most luminous galaxy ever discovered is cannibalising at least three of its smaller neighbours, study finds
The galaxy radiates at 350 trillion times the luminosity of the Sun