App Review Bitdefender Total Security 2026

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Shadowra

Shadowra

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Bitdefender is a well-known antivirus software from Romania.
The software is often highlighted and ranks among the leaders such as Kaspersky and others.
In this version, Bitdefender focuses more on AI Machine Learning to detect unknown threats.
Let's take a look...



Interface :

The Bitdefender interface has remained unchanged for several years, except that it has been refreshed since the 2025 version.
Everything is very straightforward, and AutoPilot provides advice on choices to be made (activating ransomware remediation, blocking cryptojacking, etc.).
The software is lightweight but becomes resource-intensive when in use.

Web protection: 7/7
All links are blocked.
3 link dead

Fake crack : 1/1
Blocked

Malware Pack : Remaining 19 threats out of 71
Initially, Bitdefender worked correctly and blocked the threats and traps I sent it.
Its responses were very fast and effective, and above all, it blocked malicious connections.
However, it let through a GDI malware that started displaying graphic effects (I didn't include everything because it hurts my eyes) and restarted the machine after 5 to 10 minutes.
The machine ended up blocked without the MBR: the malware corrupted it without any reaction from Bitdefender.
Too bad.

Final scan : PC destroyed


Final opinion:

Despite this misstep, which cost the virtual machine its life, Bitdefender remains a very good antivirus software.
However, I would have preferred it to add protection against MBR modifications, as the GDI malware was able to carry out its actions without any problems.
 
Bitdefender is a well-known antivirus software from Romania.
The software is often highlighted and ranks among the leaders such as Kaspersky and others.
In this version, Bitdefender focuses more on AI Machine Learning to detect unknown threats.
Let's take a look...



Interface :

The Bitdefender interface has remained unchanged for several years, except that it has been refreshed since the 2025 version.
Everything is very straightforward, and AutoPilot provides advice on choices to be made (activating ransomware remediation, blocking cryptojacking, etc.).
The software is lightweight but becomes resource-intensive when in use.

Web protection: 7/7
All links are blocked.
3 link dead

Fake crack : 1/1
Blocked

Malware Pack : Remaining 19 threats out of 71
Initially, Bitdefender worked correctly and blocked the threats and traps I sent it.
Its responses were very fast and effective, and above all, it blocked malicious connections.
However, it let through a GDI malware that started displaying graphic effects (I didn't include everything because it hurts my eyes) and restarted the machine after 5 to 10 minutes.
The machine ended up blocked without the MBR: the malware corrupted it without any reaction from Bitdefender.
Too bad.

Final scan : PC destroyed


Final opinion:

Despite this misstep, which cost the virtual machine its life, Bitdefender remains a very good antivirus software.
However, I would have preferred it to add protection against MBR modifications, as the GDI malware was able to carry out its actions without any problems.

wow diskwriter at it again. L for Bugdefender. Thanks for the test. Can u share the hash of the missed sample?
 
wow diskwriter at it again. L for Bugdefender. Thanks for the test. Can u share the hash of the missed sample?

VT : VirusTotal
It has finally been detected. I submitted it to Bitdefender at the end of the test ( Trojan.GenericKD.77572546 )
 
VT : VirusTotal
It has finally been detected. I submitted it to Bitdefender at the end of the test ( Trojan.GenericKD.77572546 )
These generickd signatures are letting BD down. Look at its competitors, ESET and Kaspersky using modified signatures which have earlier been created to detect such diskwriting behavior. Avast hits bingo with mbr signatures. I have never seen Avast and Kaspersky fail against mbr overriding malware.
 
@Shadowra said: "Malware Pack : Remaining 19 threats out of 71
Initially, Bitdefender worked correctly and blocked the threats and traps I sent it.
Its responses were very fast and effective, and above all, it blocked malicious connections.
However, it let through a GDI malware that started displaying graphic effects (I didn't include everything because it hurts my eyes) and restarted the machine after 5 to 10 minutes.
The machine ended up blocked without the MBR: the malware corrupted it without any reaction from Bitdefender.
Too bad.

Final scan : PC destroyed"
Would Eset have stopped it?
 
These generickd signatures are letting BD down. Look at its competitors, ESET and Kaspersky using modified signatures which have earlier been created to detect such diskwriting behavior. Avast hits bingo with mbr signatures. I have never seen Avast and Kaspersky fail against mbr overriding malware.
To add to that i sent files to top AVs for an interesting powershell based screen spyware. Kaspersky has so far responded with the detection with proper classification. It was only their second signature for such kind of threat, so happy i could be useful to them. ESET and Avast/Norton haven't replied yet. Hoping that BD doesn't drop another genrerickd detection:cry:
 
To add to that i sent files to top AVs for an interesting powershell based screen spyware. Kaspersky has so far responded with the detection with proper classification. It was only their second signature for such kind of threat, so happy i could be useful to them. ESET and Avast/Norton haven't replied yet. Hoping that BD doesn't drop another genrerickd detection:cry:
Detected by Ikarus; the Polar Bear hits again

Screenshot_23-10-2025_17927_www.virustotal.com.jpeg
 
IMO, Eset or Avastfree
Thanks much Shadowra for this test. I am using Bitdefender TS currently as Kaspersky is not an option where I am.
After this test, which AVs would you recommend (excluding Kaspersky)?
Just a thought, in day to day life how are you and I going to come across, download something like this? I wouldn't jump ship for this, other than any other issues you may be having with BD, like to many FP's (notepad being blocked), or numerous Suspicious Connection blocked popups, performance issues, glitches in the app etc.?
 
@Shadowra said: "Malware Pack : Remaining 19 threats out of 71
Initially, Bitdefender worked correctly and blocked the threats and traps I sent it.
Its responses were very fast and effective, and above all, it blocked malicious connections.
However, it let through a GDI malware that started displaying graphic effects (I didn't include everything because it hurts my eyes) and restarted the machine after 5 to 10 minutes.
The machine ended up blocked without the MBR: the malware corrupted it without any reaction from Bitdefender.
Too bad.

Final scan : PC destroyed"
Would Eset have stopped it?

The sample is detected by Eset.
 
I think Ikarus improved in detection.

Took a few fresh samples in Bazaar and run them. Guess what, Ikarus is one of the early detectors on multiple occasions.
I find Google detecting more samples than major vendors, but I cannot determine if it is really good, or just flagging all what is thrown to, similar to MB.