Revise the following to avoid unnecessary there is/are and it is/was fillers.
1. There is a password-checker that is now available that can automatically evaluate the strength of your password.
2. It is careless or uninformed individuals who are the most vulnerable to computer hackers.
3. There are computers in Internet cafes, at conferences, and in airport lounges that should be considered unsafe for any personal use.
4. A computer specialist told us that there are keystroke- logging devices that gather information typed on a computer, including passwords.
5. If there are any questions that you have about computer safety, please call us.