Lukas Stefanko

Lukas Stefanko

Malware Researcher


Education: Masters in Informatic Engineering of the Technical University in Kosice

Highlights of your career? Malware Researcher

Position and history at ESET? Joined ESET as a Malware Researcher in 2011

What malware do you hate the most? Adware and ransomware

Favorite activities? Gym, squash, reading

What is your golden rule for cyberspace? Be reasonably paranoid

Favorite computer game/activity? Elasto Mania


78 articles by Lukas Stefanko

Fake Prisma apps found on Google Play

Fake Prisma apps found on Google Play

Fake Prisma apps found on Google Play

ESET researchers have discovered fake Prisma apps of different types, including several dangerous trojan downloaders. The Google Play security team has since removed them.

Lukas Stefanko03 Aug 20164 min. read


Pokémon GO hype: First lockscreen tries to catch the trend

Pokémon GO hype: First lockscreen tries to catch the trend

Pokémon GO hype: First lockscreen tries to catch the trend

ESET has discovered the first ever fake lockscreen app on Google Play, named Pokemon GO Ultimate. As its characteristics suggest, it deliberately locks the screen right after the app is started forcing the user to restart the device.

Lukas Stefanko15 Jul 20164 min. read


Fake apps on Google Play tricked users into paying instead of delivering promised followers

Fake apps on Google Play tricked users into paying instead of delivering promised followers

Fake apps on Google Play tricked users into paying instead of delivering promised followers

ESET has discovered eight fake applications on Google Play, which were promising to boost the number of followers on users’ social network profiles. Our security software is detecting these as Android/Fasurke.

Lukas Stefanko14 Jul 20163 min. read


Hitting emails and Facebook: Ray-Ban scam is back

Hitting emails and Facebook: Ray-Ban scam is back

Hitting emails and Facebook: Ray-Ban scam is back

Recently, we informed you about a Ray-Ban scam campaign flooding Facebook via hacked profiles. It seems this hasn’t satisfied the attackers They're back.

Lukas Stefanko09 Jun 20162 min. read


My video, My first video, Private video: Don’t fall for this Facebook scam

My video, My first video, Private video: Don’t fall for this Facebook scam

My video, My first video, Private video: Don’t fall for this Facebook scam

My video, My first video, Private video: Don’t fall for this Facebook scam, which is infecting accounts around the world with a very high rate of success.

Lukas Stefanko14 Apr 20163 min. read


Buying Ray-Bans? Don’t fall for this Facebook scam

Buying Ray-Bans? Don’t fall for this Facebook scam

Buying Ray-Bans? Don’t fall for this Facebook scam

Recently, we’ve observed a new wave of scams on Facebook. Crooks are luring social network users to visit bogus Ray-Ban e-shops and buy heavily discounted sunglasses there. Victims’ payment card details are at risk.

Lukas Stefanko06 Apr 20164 min. read


Android banking trojan masquerades as Flash Player and bypasses 2FA

Android banking trojan masquerades as Flash Player and bypasses 2FA

Android banking trojan masquerades as Flash Player and bypasses 2FA

This malware masquerades as Flash Player, behaves like a screen locker, and can bypass two-factor authentication. This combination of features turns it into a powerful tool for stealing money from victims’ bank accounts.

Lukas Stefanko09 Mar 20164 min. read


Porn clicker trojans at Google Play: An analysis

Porn clicker trojans at Google Play: An analysis

Porn clicker trojans at Google Play: An analysis

ESET researchers have found a large campaign of malicious porn clicker type apps on Google Play. These trojans belong to a single family of malicious apps masquerading as popular games and/or applications. They are designed and systematically modified to bypass Google’s security checks.

Lukas Stefanko24 Feb 20163 min. read


The rise of Android ransomware

The rise of Android ransomware

The rise of Android ransomware

Lock-screen types and file-encrypting “crypto-ransomware”, both of which have been causing major financial and data losses for many years, have made their way to the Android platform. ESET has prepared a topical white paper on the growth of this insidious Android malware.

Robert Lipovsky and Lukas Stefanko18 Feb 20165 min. read