David Harley

David Harley

Senior Research Fellow


Education? Academic background in modern languages, social sciences, and computer science.

Highlights of your career? I was a late starter (1986) as an IT professional, beginning at the Royal Free Hospital, then with the Human Genome Project (1989), then at Imperial Cancer Research Fund (1991-2001), where I wrote/co-wrote/edited a number of Internet FAQs and my first articles on programming and security. I presented my first conference papers in 1997 (at Virus Bulletin and SANS). In 2001 Osborne published Viruses Revealed (co-written with Robert Slade and Urs Gattiker): VR and the later AVIEN Malware Defense Guide (Syngress) – to which Andrew Lee also contributed – are probably the best known of my books. When I rejoined the UK’s National Health Service in 2001, I ran the Threat Assessment Centre and was the go-to person nationally for malware issues. I left to work as a freelance author and consultant in 2006, which is also when I began to work with ESET.

Position and history at ESET? Senior Research Fellow at ESET N. America. Primarily, I’m an author and blogger, editor, conference speaker, and commentator on a wide range of security issues. Like the rest of the industry, they put up with me because I’ve been around so long.

What malware do you hate the most? Malware is just code. It’s malicious people I detest. While I’ve no love of scammers, I can see that it’s easier to be honest in a relatively prosperous environment – if there is such a thing anymore – and that cybercrime can be driven by an economic imperative. But I have nothing but contempt for those sociopaths who cause harm to others for no reason except that they can.

Favorite activities? The guitar (I still gig and record when time allows), other people’s music. I love opera but don’t attempt to sing it. Photography, art, poetry, country walking – well, ambling is about as much as I can manage at my age – good food and wine, good television when I can find it...

What is your golden rule for cyberspace? Scepticism is a survival trait: don’t assume that anything you read online is gospel truth, even this adage.

When did you get your first computer and what kind was it? Amstrad PCW (primarily a word-processor) in 1986. What else would you expect a not-very-rich author to buy in 1986? :)

Favorite computer game/activity? Extra-curricular writing (blogging, verse and lyrics, articles). Digital photography and miscellaneous artwork.


893 articles by David Harley

(More) Confessions of a Support Scammer

(More) Confessions of a Support Scammer

(More) Confessions of a Support Scammer

David Harley examines the latest confessions of a support scammer to appear on the web, this time from a Reddit Q&A.

David Harley03 Jun 20156 min. read


Phish Phood for Thought

Phish Phood for Thought

Phish Phood for Thought

In 2007, David Harley and Andrew Lee suggested at Virus Bulletin that poorly-designed phish quizzes did more harm than good. Has the picture changed much?

David Harley29 May 201513 min. read


Smartphone Authentication: the Passing of the Passcode?

Smartphone Authentication: the Passing of the Passcode?

Smartphone Authentication: the Passing of the Passcode?

Smartphone authentication: is biometric technology ready to replace PINs and passwords?

David Harley06 May 20156 min. read


Accident Scam Waiting to Happen

Accident Scam Waiting to Happen

Accident Scam Waiting to Happen

Beware of that accident scam call or text: losing money isn't the only risk.

David Harley30 Apr 20156 min. read


Tech Support Scammers with Teeth

Tech Support Scammers with Teeth

Tech Support Scammers with Teeth

Some support scammers and their assassination threats may seem dumb, but they're no joke.They can cause serious damage as we discuss it in this article.

David Harley14 Apr 201522 min. read


SEO Scams and Semi-Scams

SEO Scams and Semi-Scams

SEO Scams and Semi-Scams

Search Engine Optimization: it's an essential component of internet marketing strategy, I guess, but one with a bad public image, especially in the wake of years of abuse of optimization techniques by purveyors of malware and other bad actors (Black Hat SEO, or BHSEO).

David Harley01 Apr 20155 min. read


Heimdal blog, 19 Experts, 50+ Security Tips

Heimdal blog, 19 Experts, 50+ Security Tips

Heimdal blog, 19 Experts, 50+ Security Tips

Heimdal asked a range of security experts for their essential security tips. 19 experts (including David Harley) offered over 50 tips.

David Harley13 Mar 20153 min. read


Operating System Vulnerabilities, Exploits and Insecurity

Operating System Vulnerabilities, Exploits and Insecurity

Operating System Vulnerabilities, Exploits and Insecurity

iOS and OS X the most vulnerable operating systems? Don't confuse vulnerabilities with exploits, or patch frequency with insecurity.

David Harley10 Mar 20156 min. read


Census Scams and ‘Grandparent Scams’

Census Scams and ‘Grandparent Scams’

Census Scams and ‘Grandparent Scams’

Two phone scams of a type that might be new to you: fake surveys asking dangerous questions, and a Londoning scam that seems to target seniors.

David Harley11 Feb 20157 min. read