Should I just go back to avast, SAS, Malwarebytes and Windows Defender and uninstall the rest?
Yes!
Also, is Windows Firewall enough protection or should I look at one of your recommendations?
No.
Remember only install ONE firewallOnline ArmorSunbelt/KerioAgnitumAre there any special instructions for this so as not to reinfect this machine or infect another, should the flash have malware?
Just have your antivirus scan it.
You can also use this.
Panda USB and AutoRun VaccineInsert your flash drive before we begin.
Hold down the Shift key when inserting the flash drive until Windows detects it to bypass the autorun feature. This will keep the autorun.inf from executing automatically.
Download
Panda USB and AutoRun Vaccine and save it to your desktop. -
Alternate download link* Extract (unzip) the file to your desktop and a folder named
USBVaccine will be created.
* Open that folder and double-click on
USBVaccine.exe to start the program.
* Click
Run* Click the button to
Vaccinate computer.* Insert your USB flash drive.
* When the name of the drive appears in the dialog box, click the button to
Vaccinate USB drive(s).
* Exit Panda USB and AutoRun Vaccine when done.
Note: Computer AutoRun Vaccination will prevent any AutoRun file from running, regardless of whether the removable device is infected or not. USB Vaccination disables the autorun file so it cannot be read, modified or replaced by malicious code. The
Panda Resarch Blog advises that once USB drives have been vaccinated, they cannot be reversed except with a format. If you do this, be sure to back up your data files first or they will be lost during the formatting process.
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Final suggestions.
Use the
Secunia Software Inspector to check for out of date software.
- Click Start Now
- Check the box next to Enable thorough system inspection.
- Click Start
- Allow the scan to finish and scroll down to see if any updates are needed.
- Update anything listed.
.
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Go to
Microsoft Windows Update and get all critical updates.
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I suggest using
WOT - Web of Trust. WOT is a free Internet security addon for your browser. It will keep you safe from online scams, identity theft, spyware, spam, viruses and unreliable shopping sites. WOT warns you before you interact with a risky website. It's easy and it's free.
SpywareBlaster - Secure your Internet Explorer to make it harder for ActiveX programs to run on your computer. Also stop certain cookies from being added to your computer when running Mozilla based browsers like Firefox.
*
Using SpywareBlaster to protect your computer from Spyware and Malware* If you don't know what ActiveX controls are, see
hereProtect yourself against spyware using the Immunize feature in
Spybot - Search & Destroy.
Guide: Use Spybot's Immunize Feature to prevent spyware infection in real-time.
Note: To ensure you have the latest Immunizations always update Spybot - Search & Destroy before Immunizing.
Spybot - Search & Destroy FAQCheck out
Keeping Yourself Safe On The Web for tips and free tools to help keep you safe in the future.
Also see
Slow Computer? It May Not Be Malware for free cleaning/maintenance tools to help keep your computer running smooth.