Online Security Pro

Online Security Pro

Online security against malware, phishing and malicious websites.

Online Security Pro promo image
What is Online Security Pro?

Online Security Pro is a featured Chrome extension by This extension has 60,923 weekly active users, a good user rating of 4.45, and is most similar to Microsoft Defender Browser Protection and Malwarebytes Browser Guard. The latest version,, was updated 2 years ago.

Stats date:
Rating: 4.45 (172)
Version: (Last updated: 2020-10-15)
Creation date: 2020-07-10
Manifest version: 2
  • storage
  • webRequest
  • webRequestBlocking
  • activeTab
  • tabs
  • *://*/*
  • http://*/*
  • https://*/*
  • <all_urls>
Size: 287.74K
Email: Click to see
Risk impact: High risk impact
Risk likelihood: Very low risk likelihood
Found a bug?

Other platforms

Not available on Firefox
Not available on Edge
Online Security Pro protects you against malware, phishing and malicious websites.
Protect yourself, your family and your identity credentials against online threats, like phishing and malicious websites, with real-time protection from Comodo. 

Online Security Pro extension helps protect you against online threats, such as links in phishing emails and websites designed to trick you into downloading and installing malicious software that can harm your computer. 

While you are surfing on the internet, malicious links and phishing URLs are everywhere. So this extension helps you block those phishing urls and malicious links easily. 

How are we doing this?

Step 1: When you click a malicious link in an email or navigate to a site designed to trick you into disclosing financial, personal or other sensitive information, or a website that hosts malware, Online Security Pro checks it against a frequently updated list of malicious URLs known to Comodo. 

Step 2: If the malicious link matches one on the list, Online Security Pro shows an information screen letting you know that the web page you are about to visit is known to be harmful, and showing options for you to go back to safety, allow and go or report. 


Also, this process does not affect your browsing speed, and you can surf the internet as fast as you can and securely.
Risk impact

Online Security Pro requires a number of risky permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install Online Security Pro if you trust the publisher.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Online Security Pro has earned a good reputation and can be trusted.

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension, especially ones with higher risk impact and/or higher risk likelihood.

Subscribe to the premium plan to see more risk analysis details
User reviews
Ohhhhh developer's y'all did so good I was clicking on free robux Generators then it said a scamming.
by Bao Nguyen Bao Nguyen, 2023-03-17

by Patricia Wheatley Patricia Wheatley, 2022-10-25

Works well and seems to be identical to the Microsoft Defender browser extension that is only available in the USA at the time of writing. When I say identical, I mean that the text used to explain both in the Chrome web store is literally identical, so maybe MS have bought it from Comodo. That at least ought to give some confidence. Would be five stars if I could figure out whether it is functionally any different to using Cloudflare's free anti-malware DNS servers or a decent anti virus program.
by Sean McDougall Sean McDougall, 2022-06-14
View all user reviews
Promo images
Online Security Pro marquee promo image
Marquee promo image
Online Security Pro large promo image
Large promo image
Online Security Pro small promo image
Small promo image
Similar extensions

Here are some Chrome extensions that are similar to Online Security Pro:

Microsoft Defender Browser Protection Microsoft Defender Browser Protection
User count: 2,376,265
Rating: 600
Protect yourself against online threats, like phishing and malicious websites, with real-time protection from Microsoft.
Malwarebytes Browser Guard Malwarebytes Browser Guard
User count: 9,827,030
Rating: 815
The fastest and safest web browsing experience.
WebDefender: Antivirus & Privacy Protection WebDefender: Antivirus & Privacy Protection
User count: 9,619
Rating: 23
WebDefender is a lightweight addon designed to clean browser from malware, prevent phishing and protect your private information.