Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to minimise security risks from hackers and crackers [title] Use secure passwords. [step] The passwords you use should contain at least 7, and more than 12 characters if your network supports this limit. It will be useful to use passwords which include letters, numbers and punctuation marks.

Ending1: No need to worry if your network does not allow punctuation marks for your password, you can use a combination of letters and numbers. The passwords will be more secure if you drop vowels and replace letters in memorable words. Ending2: Remember to use these passwords when you go offline. [substeps] Many hackers won't attempt to cheat, so make sure to change passwords constantly. Ending3: This can limit or eliminate the thief's entry into your network. [title] Describe what happened (loudly and repeatedly). Ending4: The password should not be kept encrypted unless you are able to modify it to your own usage. Encrypted passwords should be kept highly confidential and will require no public knowledge.

Answer format: ending1/ending2/ending3/ending4