Tech Graveyard/security
Signature-Based Antivirus (1987 to 2024)
Signature-based antivirus was obsolete by 2015. Marketing budgets kept it alive another decade. EDR and XDR finished the job in 2024.
Born 1987 · Died 2024 · Status: dying
Certificate of Death
Name of decedent
Signature-Based Antivirus
- Born
- 1987
- Died
- 2024
- Age
- 37
Cause of death
Polymorphic and AI-generated malware made signature matching mathematically impossible
Survived by
EDR (CrowdStrike, SentinelOne), XDR, behavioral analytics platforms
Invented by
Multiple inventors; commercialized by McAfee VirusScan and Symantec Norton AntiVirus
The hook
AV-TEST registers more than 450,000 new malware samples per day. Signature-based AV requires writing a new signature for each. The math has not worked since 2015.
Thesis. Signature AV did not die from a technical breakthrough. It died because the input volume crossed the rate at which signatures could be generated.
The story
The origin
McAfee VirusScan, 1987. The idea was simple: compare each file against a database of known-bad byte patterns. Simple, fast, effective for the malware landscape of the late 1980s.
The peak
2005. AV is mandatory on every Windows machine. Compliance auditors check the box. The category was so well-defined that it spawned the most successful enterprise security companies of the era.
The polymorphism problem
Late 2000s onward. Malware mutates each instance. Static signatures stop matching. Generic detection improves but cannot keep up with the rate of new variants being generated.
The behavioral pivot
CrowdStrike (2011), SentinelOne (2013), Cylance (2012). Endpoint Detection and Response replaces 'scan for known bad' with 'watch for suspicious behavior.' The model fundamentally changes from pattern matching to telemetry analysis.
The compliance migration
By 2024, NIST and major frameworks update guidance. EDR is the floor. Signature AV alone is non-compliant. The compliance change finished what the technology change started.
Key data points
- McAfee VirusScan launch: 1987
- AV-TEST daily malware sample count: 450,000+
- CrowdStrike founding: 2011
- SentinelOne founding: 2013
- NIST CSF 2.0 guidance update: 2024
- Notable signature AV failure events: WannaCry 2017, NotPetya 2017
Contrarian angle
The most successful product in cybersecurity history was a model that fundamentally could not scale. The vendors knew. They sold something else (EDR) once they could.
The flip side
What replaces it
The paired prediction in Future Tech.
Read the predictionFAQ
Is Windows Defender still signature-based?
Hybrid. Defender uses cloud-delivered ML detection, behavioral analytics, and signatures together. The signature component is the smallest share of the actual detection now.
Do I still need antivirus on my Mac?
Built-in XProtect plus Gatekeeper covers most consumer threats. For enterprise Macs, EDR is the right tool. Pure signature-based AV is not the answer on either platform.
Is 'next-gen AV' different from EDR?
Largely a marketing distinction now. NGAV originally meant 'ML-based instead of signature-based.' EDR adds telemetry retention and response capabilities. Modern platforms are both.
More from guptadeepak.com
Want the technical deep-dive on what replaces this?
Read the companion articleRelated obituaries
More from the security graveyard.
2000 — Dying
DyingThe CAPTCHA
GPT-4 solves reCAPTCHA v2 with 99.8% accuracy. The CAPTCHA only blocks humans now.
Cause: AI vision models solve CAPTCHAs faster than humans at $0.001 per solve
security · Peak 2014 · Final breath 2027
1839 — Dying
DyingThe Photo as Proof
I built auth systems that decide whether a credential is real a billion times a day. Photographs used to do that work for free, no system required. That era ended quietly, and almost nobody changed how they look at an image.
Cause: Generative models that produce photoreal images of anything, indistinguishable from a capture, at zero marginal cost.
security · Peak 2005 · Final breath 2028
1960 — Dying
DyingStranger Danger
We taught a whole generation one rule: do not talk to strangers. Then we got in their cars, slept in their homes, and matched with them at 11pm. I spent years building the trust rails that made the rule obsolete, and I am still not sure we made the right trade.
Cause: Rating systems and platform intermediation made stranger trust scalable, so the instinct to avoid strangers stopped paying off.
security · Peak 1990 · Final breath 2030