About this hijacker
ShieldDefense.net is a website, set as your new homepage by a browser hijacker. It is identical to Mystartshield.com, another hijacker website. Hijackers are not considered to be serious infections because they do not directly harm computers but that does not mean they are harmless. You’ve probably noticed what it does already.
It changes browser’s settings so that its promoted website is made to be your homepage, and then proceeds to redirect you. It aims to generate income for the sites you are redirected to so you gain nothing from this. Some hijackers are also able to lead to malicious sites where malware could be encountered. If you are wondering how you even managed to acquire the infection, it was added to freeware as an additional offer, one that you needed to deselect. If you failed to do so, it installed. Remove ShieldDefense.net.
How to prevent hijacker infections?
Browser hijackers are added to freeware as extra offers you need to make sure you deselect them to prevent their installation. This is done in Advanced or Custom settings, which you should choose when installing freeware. Those settings will show you if anything has been added and if there is something, you will be able to deselect everything. You can not do that in Default settings so avoid using them. Unless, of course, you enjoy having to delete ShieldDefense.net or similar over and over again.
Why uninstall ShieldDefense.net?
Browser hijackers immediately change browser’s settings and prevent you from undoing those changes. You will have a new homepage set without your permission on all popular browsers, including Internet Explorer, Google Chrome and Mozilla Firefox. You will only be able to change settings after you remove ShieldDefense.net. We do not recommend engaging with anything the website offers you, although it only has a search engine. If you were to use it, you would be led to MyStart Shield Yahoo Search where you could encounter sponsored websites inserted among the legitimate results. This is done so that the hijacker could earn pay-per-click income for the owners of those websites. Hijackers do not care whether you are led to safe websites, so you could end up on a malicious one, where malware could be lurking. If you do not want to end up with some kind of malware, you might want to delete ShieldDefense.net.
ShieldDefense.net removal
If you want to uninstall ShieldDefense.net, you can do so in two ways. If you can locate where the hijacker is hiding, you should have no problems with manual ShieldDefense.net removal. Otherwise, you can obtain anti-spyware and have it take care of everything.
Offers
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Quick Menu
Step 1. Uninstall ShieldDefense.net and related programs.
Remove ShieldDefense.net from Windows 8
Right-click in the lower left corner of the screen. Once Quick Access Menu shows up, select Control Panel choose Programs and Features and select to Uninstall a software.
Uninstall ShieldDefense.net from Windows 7
Click Start → Control Panel → Programs and Features → Uninstall a program.
Delete ShieldDefense.net from Windows XP
Click Start → Settings → Control Panel. Locate and click → Add or Remove Programs.
Remove ShieldDefense.net from Mac OS X
Click Go button at the top left of the screen and select Applications. Select applications folder and look for ShieldDefense.net or any other suspicious software. Now right click on every of such entries and select Move to Trash, then right click the Trash icon and select Empty Trash.
Step 2. Delete ShieldDefense.net from your browsers
Terminate the unwanted extensions from Internet Explorer
- Tap the Gear icon and go to Manage Add-ons.
- Pick Toolbars and Extensions and eliminate all suspicious entries (other than Microsoft, Yahoo, Google, Oracle or Adobe)
- Leave the window.
Change Internet Explorer homepage if it was changed by virus:
- Tap the gear icon (menu) on the top right corner of your browser and click Internet Options.
- In General Tab remove malicious URL and enter preferable domain name. Press Apply to save changes.
Reset your browser
- Click the Gear icon and move to Internet Options.
- Open the Advanced tab and press Reset.
- Choose Delete personal settings and pick Reset one more time.
- Tap Close and leave your browser.
- If you were unable to reset your browsers, employ a reputable anti-malware and scan your entire computer with it.
Erase ShieldDefense.net from Google Chrome
- Access menu (top right corner of the window) and pick Settings.
- Choose Extensions.
- Eliminate the suspicious extensions from the list by clicking the Trash bin next to them.
- If you are unsure which extensions to remove, you can disable them temporarily.
Reset Google Chrome homepage and default search engine if it was hijacker by virus
- Press on menu icon and click Settings.
- Look for the “Open a specific page” or “Set Pages” under “On start up” option and click on Set pages.
- In another window remove malicious search sites and enter the one that you want to use as your homepage.
- Under the Search section choose Manage Search engines. When in Search Engines..., remove malicious search websites. You should leave only Google or your preferred search name.
Reset your browser
- If the browser still does not work the way you prefer, you can reset its settings.
- Open menu and navigate to Settings.
- Press Reset button at the end of the page.
- Tap Reset button one more time in the confirmation box.
- If you cannot reset the settings, purchase a legitimate anti-malware and scan your PC.
Remove ShieldDefense.net from Mozilla Firefox
- In the top right corner of the screen, press menu and choose Add-ons (or tap Ctrl+Shift+A simultaneously).
- Move to Extensions and Add-ons list and uninstall all suspicious and unknown entries.
Change Mozilla Firefox homepage if it was changed by virus:
- Tap on the menu (top right corner), choose Options.
- On General tab delete malicious URL and enter preferable website or click Restore to default.
- Press OK to save these changes.
Reset your browser
- Open the menu and tap Help button.
- Select Troubleshooting Information.
- Press Refresh Firefox.
- In the confirmation box, click Refresh Firefox once more.
- If you are unable to reset Mozilla Firefox, scan your entire computer with a trustworthy anti-malware.
Uninstall ShieldDefense.net from Safari (Mac OS X)
- Access the menu.
- Pick Preferences.
- Go to the Extensions Tab.
- Tap the Uninstall button next to the undesirable ShieldDefense.net and get rid of all the other unknown entries as well. If you are unsure whether the extension is reliable or not, simply uncheck the Enable box in order to disable it temporarily.
- Restart Safari.
Reset your browser
- Tap the menu icon and choose Reset Safari.
- Pick the options which you want to reset (often all of them are preselected) and press Reset.
- If you cannot reset the browser, scan your whole PC with an authentic malware removal software.
Site Disclaimer
2-remove-virus.com is not sponsored, owned, affiliated, or linked to malware developers or distributors that are referenced in this article. The article does not promote or endorse any type of malware. We aim at providing useful information that will help computer users to detect and eliminate the unwanted malicious programs from their computers. This can be done manually by following the instructions presented in the article or automatically by implementing the suggested anti-malware tools.
The article is only meant to be used for educational purposes. If you follow the instructions given in the article, you agree to be contracted by the disclaimer. We do not guarantee that the artcile will present you with a solution that removes the malign threats completely. Malware changes constantly, which is why, in some cases, it may be difficult to clean the computer fully by using only the manual removal instructions.