The crime briefings that are used to produce the maps are created from data given to the council’s Community Safety Division by the police. The Community Safety Division ‘sanitises’ the data to ensure that personal information does not get into the public domain. It is important that victims are not identified in them.
Both the council and the police take the security of the data very seriously, and while there has not been a problem with the process they’ve decided to halt until a secure communication channel can be set-up. Work is in progress on this, and will be completed within the next week or two.
In the meantime you can have a look at the Met’s crime maps. I think these are still far from perfect (you can read why in a previous post) and it’s highly likely all you’ll discover is that crime is ‘average’ – but they are better than nothing.