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Protection - Malware/ Firmware/etc.

Everything you want to know about our cybersecurity features for Windows. Here you'll find topics on Malware, Firmware, Online Threat Prevention, Vulnerability, Firewall, Ransomware Remediation, and Antispam.

How do I stop Bitdefender creating new rules in firewall?
Hi guys. I have an issue with Bitderender firewall. I deny access to applications in the rules section, but Bitdefender creates new rules on those applications, giving it acces to the internet. It is rather annoying to deny access to the internet for certain programs, then later discover that Bitdefender created a new…
Has your email address ever been found in a data breach?
Has anyone here checked whether their email address has appeared in a data breach recently? I’m curious which breach checkers you trust. I came across purevpn’s dark web scanner, which checks for exposed personal information, and wondered if anyone has tried it. What tools do you use to check and protect your accounts?
How do you stop this type of "virus?" Fake antivirus infection browser pop-ups
Bitdefender, did not stop or find this virus. How do I fix this or what do I search for?
Corrupting my thunderbird folders
Somehow you reenabled your extension on Thunderbird. This lead to you quarantining an email before it was inserted into the folder and destroying the indexes in that folder. It took me two hours of restoring backups having you corrupt the folder again and again until I realized it was you. After disabling Bitdefender,…
Rescue Environment cannot start on Bitdefender Antivirus Plus
Hi All The Bitdefender Antivirus Plus was recently updated. New UI. Better and responsive, version 2.0.188. But the Rescue Environment button when pressed does nothing. Also File Shredder does not work. Output - 0/0 files shredded. Suspecting some big bad virus is on the machine conflicting with Bitdefender. Reinstalling…
WSC Communicator Starts Late
Hello, I reinstalled Windows and installed Bitdefender, but I have recently started experiencing a problem. When I boot Windows, I receive a notification from Windows Security stating that both Bitdefender and Microsoft Defender are turned off. Windows Defender then becomes active and consumes RAM and CPU resources, even…
False Positive? (Suspicious Connection Blocked) - mozilla[.]cloudflare[.]dns[.]com
Greetings all, I was jotting down some physical notes to store offline for account recovery & disaster recovery hygiene, and while sitting at my desk the power for the building dropped for a split second and seemed like it was about to take everything down, but instead was saw/felt it do this weird humming vibration that…
Bug: Bitdefender Firewall Alert Mode repeatedly asks to allow same unchanged application [Under investigation]
I have "alert mode" enabled so it always asks me whether to allow/deny a new application's access to the internet, or after that application has changed. For example: Problem: Since an apparent Bitdefender update around yesterday, it's been repeatedly asking me to approve the same exact applications back to back, over and…
Checkmarks from Search Advisor Upside Down
Hello. I've already submitted a support ticket, but I just wanted to know if anyone else is having this issue. A few days ago, the checkmarks by websites on Google have been displaying upside down. What makes it even weirder is if that website has sublinks that show up underneath the website, those display correctly. I've…
TECHNICAL BUG REPORT: SSL/TLS Interception Failure on HTTP/3 (QUIC) Protocol causing loop CAPTCHAs (Escalate to Tier 2 / Dev Team)
Dear Support Team, IMPORTANT: PLEASE ESCALATE THIS TICKET DIRECTLY TO YOUR SOFTWARE ENGINEERING / DEVELOPMENT TEAM (TIER 2 SUPPORT). I am writing to provide an important update and report a severe bug in the SSL/TLS interception engine of Bitdefender Total Security 2026 on Windows 10 IoT Enterprise 2021. THE ISSUE When the…
Codex PowerShell commands blocked by Antivirus; Antivirus exclusion unavailable and reinstall did not help
Hello Bitdefender team, I need help with a persistent issue that is preventing me from continuing development on my personal Windows 11 computer using OpenAI Codex. What happens Bitdefender repeatedly displays “Malicious command line detected,” with the feature listed as “Antivirus.” The application is the pwsh.exe bundled…
Password Popup for Setting Changes
I keep getting a popup when I try to change a setting. I created a password for this only a couple of days ago but it doesn't seem to be working. How do I go about changing the password required to change settings?
How do I activate Popup Blocker / eliminate nuisance virus notifications?
Hello, The attached file shows screenshots that illustrate my Build Version # for Bitdefender Total Security, along with some nuisance virus notifications I started getting a week or so ago. Since then, I've run a complete Deep Scan on my laptop / flash drive several times…. No threats detected. I've attempted to launch a…
Is this site really a threat or False positive?
Whenever I access nmpc.in website, Bitdefender (Free AV) starts suggesting to close the site for suspicious activity. Link: https://www.nmpc.in/products/8bitdo-ultimate-2c-wired-controller?variant=50182753616109 Popup: Same scene when scanned here: https://www.bitdefender.com/en-in/consumer/link-checker But Kaspersky did…
Need some assistance, I believe my computer may still be infected.
Hello, I recently dealt with a Trojan loading itself into my PC through an exe file known as "Renpy". This trojan proceeded to steal my passwords and wreak a bit of havoc. I've since reset all of my logins and other data. I believed I was able to remove pretty much all of the infected files. However, there is an exe called…
Bug: Bitdefender not starting correctly on PC Boot
Hi, after updating to build 27.0.62.352 bitdefender sometimes doesn't startup correctly after the pc has been shutdown for the night. On first boot the icon will appear but it will say "Bitdefender services are loading" when opening the interface will prompt the user with a login screen and the services will never start.…
Where are the scan logs in Total Security?
In my humble opinion, it is a huge flaw and degradation of the software that you can no longer go somewhere simple to look at the logs for recent scans. Where the heck do you go to look at a scan that maybe you did yesterday and you need to go back and look at the log? Whoever decided to hide the feature that let you look…
Full System Scan difference in number of files scanned
Can anyone tell me why my Full System Scan is showing about 1/3 less than a week ago? I usually get about 1.500K items scanned every 5 to 6 days, the last time my scan showed this amount was on Sept.19/26, I ran it a couple of times lately and only about 500k items showed, just an hour ago I ran another full scan this time…
How do I fix Bitdefender no longer marking Outlook 365 email labels as safe or dangerous
My account shows that Email protection is enabled and active for my outlook email account, but I no longer see the flags on each email beginning on the 19th. The Bitdefender email activity log shows this. In the attached image there is no email protection activity for the 20th and the 21st, but I do have emails in my inbox…
Gmail certificate problem in Thunderbird
Hi, Today I've had to disable Encrypted Web Scan in Bitdefender Free to be able to collect my Gmail otherwise it complains that the certificate for imap.google.com is not from a trusted source, I did try adding the path to thunderbird to the exceptions list in BD but that did nothing. Any suggestions please? Thanks in…
Having issues with a possible crypto miner on my PC
Lately I've been having issue with my computer its been shutting off and re-opening and CPU was frying… so I decided to check and there was CPU burner or crypto miner because of that my computer was slower than usua. I did a Bitdefender scan and it couldn't find it. I deleted the file but it still didn't stop the malware.…
Memory Leak: Kernel pool growth attributed to atc.sys (Active Threat Control)
SUMMARY On this machine atc.sys accumulates kernel pool memory continuously and does not return it until reboot. At 6 days uptime it held 1,242 MB across 282 distinct pool tags with 3,063,374 outstanding allocations. After a reboot it reached 357 MB within 20 minutes. The memory is never returned while Windows is running.…
ATC4.Detection viruses
i am facing suddenly of an "atc4.detection" viruses that send dozen of programs , folders , .dll , etc.. in quarantine which is considered as a false positive i restored the quarantine , but unfortunately some files are not restored mainly because the folder of the files are deleted. its seems that atc4.detection…
Bitdefender Won't Scan Password Protected Files [Explanation]
I did a full scan on this system and received the message that 1024 files were skipped because they are "password protected". They are .svg files which can contain malicious code. Is there a reason for skipping the files? Someone reported that Malwarebytes scanned the folder without issue although I can't confirm that. See…
PNPM/Vitest false positive
So just now I ran into a few issues with running my PNPM Vitest tasks. Out of nowhere it suddenly started flagging the unit test run of my Angular application. (Context: its a Node/Typescript project that runs various PNPM tasks for which it needs to install certain Node Modules) It saw my vitest config.ts file as threat…
Bitdefender Notification: Infected Webpage Detected
I am receiving the following multiple notifications from Bitdefender Antivirus Plus: Feature: Online Threat Prevention We blocked this dangerous page for your protection: https://overbridgenet.com/jsv8/offer Dangerous pages attempt to install software that can harm the device, gather personal information or operate without…
My website has been detected with suspicious activity by BitDefender + weird suffix URL's
Hi, Bitdefender is displaying an alert for a website i'm managing. When i go on the website, i get a "suspicious webpage detected - the page [...] has been detected with suspicious activity. It is not recommanded to continue browsing this website". I didn't had this alert before. I verified on my google search console, and…
Bitdefender Email Protection Safe label - How to keep only the Dangerous label?
Is there a way to suppress the Bitdefender Email Protection Safe tag from appearing in the subject line of emails on the new Outlook for iMac? I've tried creating rules both local and client side and unfortunately under a new Outlook they do not work. Does Bitdefender have an option or utility for suppressing just the safe…
False Positive Report: Madxka (ROBLOX revival) detected as virus
Launcher: https://cdn.madxka.com/clients/cartiiLauncher.exe Website: https://madxka.com
How Well Could Bitdefender Protect Users From Rootkits Delivered Through Supply Chain Attacks?
Say some hackers got control of a popular open source repository (for the purpose of this example, let's give it a fun name like XZ Utils). The hackers then program a rootkit into the next release, and then send it public. How well could Bitdefender protect against such an attack, if at all?

How do I stop Bitdefender creating new rules in firewall?
Hi guys. I have an issue with Bitderender firewall. I deny access to applications in the rules section, but Bitdefender creates new rules on those applications, giving it acces to the internet. It is rather annoying to deny access to the internet for certain programs, then later discover that Bitdefender created a new…
Has your email address ever been found in a data breach?
Has anyone here checked whether their email address has appeared in a data breach recently? I’m curious which breach checkers you trust. I came across purevpn’s dark web scanner, which checks for exposed personal information, and wondered if anyone has tried it. What tools do you use to check and protect your accounts?
How do you stop this type of "virus?" Fake antivirus infection browser pop-ups
Bitdefender, did not stop or find this virus. How do I fix this or what do I search for?
Corrupting my thunderbird folders
Somehow you reenabled your extension on Thunderbird. This lead to you quarantining an email before it was inserted into the folder and destroying the indexes in that folder. It took me two hours of restoring backups having you corrupt the folder again and again until I realized it was you. After disabling Bitdefender,…
Rescue Environment cannot start on Bitdefender Antivirus Plus
Hi All The Bitdefender Antivirus Plus was recently updated. New UI. Better and responsive, version 2.0.188. But the Rescue Environment button when pressed does nothing. Also File Shredder does not work. Output - 0/0 files shredded. Suspecting some big bad virus is on the machine conflicting with Bitdefender. Reinstalling…
WSC Communicator Starts Late
Hello, I reinstalled Windows and installed Bitdefender, but I have recently started experiencing a problem. When I boot Windows, I receive a notification from Windows Security stating that both Bitdefender and Microsoft Defender are turned off. Windows Defender then becomes active and consumes RAM and CPU resources, even…
False Positive? (Suspicious Connection Blocked) - mozilla[.]cloudflare[.]dns[.]com
Greetings all, I was jotting down some physical notes to store offline for account recovery & disaster recovery hygiene, and while sitting at my desk the power for the building dropped for a split second and seemed like it was about to take everything down, but instead was saw/felt it do this weird humming vibration that…
Bug: Bitdefender Firewall Alert Mode repeatedly asks to allow same unchanged application [Under investigation]
I have "alert mode" enabled so it always asks me whether to allow/deny a new application's access to the internet, or after that application has changed. For example: Problem: Since an apparent Bitdefender update around yesterday, it's been repeatedly asking me to approve the same exact applications back to back, over and…
Checkmarks from Search Advisor Upside Down
Hello. I've already submitted a support ticket, but I just wanted to know if anyone else is having this issue. A few days ago, the checkmarks by websites on Google have been displaying upside down. What makes it even weirder is if that website has sublinks that show up underneath the website, those display correctly. I've…
TECHNICAL BUG REPORT: SSL/TLS Interception Failure on HTTP/3 (QUIC) Protocol causing loop CAPTCHAs (Escalate to Tier 2 / Dev Team)
Dear Support Team, IMPORTANT: PLEASE ESCALATE THIS TICKET DIRECTLY TO YOUR SOFTWARE ENGINEERING / DEVELOPMENT TEAM (TIER 2 SUPPORT). I am writing to provide an important update and report a severe bug in the SSL/TLS interception engine of Bitdefender Total Security 2026 on Windows 10 IoT Enterprise 2021. THE ISSUE When the…
Codex PowerShell commands blocked by Antivirus; Antivirus exclusion unavailable and reinstall did not help
Hello Bitdefender team, I need help with a persistent issue that is preventing me from continuing development on my personal Windows 11 computer using OpenAI Codex. What happens Bitdefender repeatedly displays “Malicious command line detected,” with the feature listed as “Antivirus.” The application is the pwsh.exe bundled…
Password Popup for Setting Changes
I keep getting a popup when I try to change a setting. I created a password for this only a couple of days ago but it doesn't seem to be working. How do I go about changing the password required to change settings?
How do I activate Popup Blocker / eliminate nuisance virus notifications?
Hello, The attached file shows screenshots that illustrate my Build Version # for Bitdefender Total Security, along with some nuisance virus notifications I started getting a week or so ago. Since then, I've run a complete Deep Scan on my laptop / flash drive several times…. No threats detected. I've attempted to launch a…
Is this site really a threat or False positive?
Whenever I access nmpc.in website, Bitdefender (Free AV) starts suggesting to close the site for suspicious activity. Link: https://www.nmpc.in/products/8bitdo-ultimate-2c-wired-controller?variant=50182753616109 Popup: Same scene when scanned here: https://www.bitdefender.com/en-in/consumer/link-checker But Kaspersky did…
Need some assistance, I believe my computer may still be infected.
Hello, I recently dealt with a Trojan loading itself into my PC through an exe file known as "Renpy". This trojan proceeded to steal my passwords and wreak a bit of havoc. I've since reset all of my logins and other data. I believed I was able to remove pretty much all of the infected files. However, there is an exe called…
Bug: Bitdefender not starting correctly on PC Boot
Hi, after updating to build 27.0.62.352 bitdefender sometimes doesn't startup correctly after the pc has been shutdown for the night. On first boot the icon will appear but it will say "Bitdefender services are loading" when opening the interface will prompt the user with a login screen and the services will never start.…
Where are the scan logs in Total Security?
In my humble opinion, it is a huge flaw and degradation of the software that you can no longer go somewhere simple to look at the logs for recent scans. Where the heck do you go to look at a scan that maybe you did yesterday and you need to go back and look at the log? Whoever decided to hide the feature that let you look…
Full System Scan difference in number of files scanned
Can anyone tell me why my Full System Scan is showing about 1/3 less than a week ago? I usually get about 1.500K items scanned every 5 to 6 days, the last time my scan showed this amount was on Sept.19/26, I ran it a couple of times lately and only about 500k items showed, just an hour ago I ran another full scan this time…
How do I fix Bitdefender no longer marking Outlook 365 email labels as safe or dangerous
My account shows that Email protection is enabled and active for my outlook email account, but I no longer see the flags on each email beginning on the 19th. The Bitdefender email activity log shows this. In the attached image there is no email protection activity for the 20th and the 21st, but I do have emails in my inbox…
Gmail certificate problem in Thunderbird
Hi, Today I've had to disable Encrypted Web Scan in Bitdefender Free to be able to collect my Gmail otherwise it complains that the certificate for imap.google.com is not from a trusted source, I did try adding the path to thunderbird to the exceptions list in BD but that did nothing. Any suggestions please? Thanks in…
Having issues with a possible crypto miner on my PC
Lately I've been having issue with my computer its been shutting off and re-opening and CPU was frying… so I decided to check and there was CPU burner or crypto miner because of that my computer was slower than usua. I did a Bitdefender scan and it couldn't find it. I deleted the file but it still didn't stop the malware.…
Memory Leak: Kernel pool growth attributed to atc.sys (Active Threat Control)
SUMMARY On this machine atc.sys accumulates kernel pool memory continuously and does not return it until reboot. At 6 days uptime it held 1,242 MB across 282 distinct pool tags with 3,063,374 outstanding allocations. After a reboot it reached 357 MB within 20 minutes. The memory is never returned while Windows is running.…
ATC4.Detection viruses
i am facing suddenly of an "atc4.detection" viruses that send dozen of programs , folders , .dll , etc.. in quarantine which is considered as a false positive i restored the quarantine , but unfortunately some files are not restored mainly because the folder of the files are deleted. its seems that atc4.detection…
Bitdefender Won't Scan Password Protected Files [Explanation]
I did a full scan on this system and received the message that 1024 files were skipped because they are "password protected". They are .svg files which can contain malicious code. Is there a reason for skipping the files? Someone reported that Malwarebytes scanned the folder without issue although I can't confirm that. See…
PNPM/Vitest false positive
So just now I ran into a few issues with running my PNPM Vitest tasks. Out of nowhere it suddenly started flagging the unit test run of my Angular application. (Context: its a Node/Typescript project that runs various PNPM tasks for which it needs to install certain Node Modules) It saw my vitest config.ts file as threat…
Bitdefender Notification: Infected Webpage Detected
I am receiving the following multiple notifications from Bitdefender Antivirus Plus: Feature: Online Threat Prevention We blocked this dangerous page for your protection: https://overbridgenet.com/jsv8/offer Dangerous pages attempt to install software that can harm the device, gather personal information or operate without…
My website has been detected with suspicious activity by BitDefender + weird suffix URL's
Hi, Bitdefender is displaying an alert for a website i'm managing. When i go on the website, i get a "suspicious webpage detected - the page [...] has been detected with suspicious activity. It is not recommanded to continue browsing this website". I didn't had this alert before. I verified on my google search console, and…
Bitdefender Email Protection Safe label - How to keep only the Dangerous label?
Is there a way to suppress the Bitdefender Email Protection Safe tag from appearing in the subject line of emails on the new Outlook for iMac? I've tried creating rules both local and client side and unfortunately under a new Outlook they do not work. Does Bitdefender have an option or utility for suppressing just the safe…
False Positive Report: Madxka (ROBLOX revival) detected as virus
Launcher: https://cdn.madxka.com/clients/cartiiLauncher.exe Website: https://madxka.com
How Well Could Bitdefender Protect Users From Rootkits Delivered Through Supply Chain Attacks?
Say some hackers got control of a popular open source repository (for the purpose of this example, let's give it a fun name like XZ Utils). The hackers then program a rootkit into the next release, and then send it public. How well could Bitdefender protect against such an attack, if at all?