no
"Computer forensics" is the word that refers to recovering deleted computer files. This can be done by a criminal that is looking for information, the police to help with an investigation, or by a company that is willing to help you recover files that was accidently deleted.
Yes they can.
Absolutely, yes!
Information that is irrelevant, out of place or not important can be deleted or moved into a folder or place where it can be reused as a form or related information in time.
Yes, the police can trace a deleted account. The cyber security cell can trace older accounts too. They have advanced features to trace back accounts.
I am not sure what you mean by "delete " the settlers. People are not deleted. Information is deleted.
CRB checks were replaced by DBS checks in 2012. On enhanced DBS checks, the police have the power to include any intelligence they hold about an individual if they believe it is relevant to a recruitment decision. 'Soft information' is any intelligence the police hold that did not result in a disposal such as a caution/conviction. For example, information regarding allegations or arrests that did not lead to prosecution would be 'soft information'.
Most websites will store your data even though you have deleted your information or account.
The problem of information technology in police is that not all the police are good with computers that will easily allow them disseminate information.
I don't know how likely it is for police to be looking through your digital camera. It's never happened to me. :) But as a rule, the files that are written to the memory chip on your camera, laptop, computer, USB drive can all be successfully recovered to a certain extent, depending on whether the deleted file has been overwritten with new information or not. You can use a program to wipe your memory chip, or any other drive. I've used R-wipe & Clean, and PGP. What wiping does is write over your deleted file with random information so that it cannot be retrieved.
NO
More information about a police academy may be obtained by contacting local police departments. Local police departments will have information about training requirements.