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

Turn the light on and give me your passwords!

Turn the light on and give me your passwords!

Turn the light on and give me your passwords!

ESET researchers have discovered another banking trojan on Google Play targeting Android users – this time disguised as a Flashlight widget.

Lukas Stefanko19 Apr 20175 min. read


Real or virtual currency? Scammers accept both

Real or virtual currency? Scammers accept both

Real or virtual currency? Scammers accept both

ESET researchers have discovered and reported scammers stealing PayPal and Paxful credentials disguised as a tool for YouTube monetization, and a bitcoin trading marketplace.

Lukas Stefanko13 Apr 20175 min. read


If you download Minecraft mods from Google Play, read on …

If you download Minecraft mods from Google Play, read on …

If you download Minecraft mods from Google Play, read on …

ESET researchers have discovered 87 malicious apps on Google Play disguised as mods for Minecraft.

Lukas Stefanko23 Mar 20174 min. read


New Instagram credential stealers discovered on Google Play

New Instagram credential stealers discovered on Google Play

New Instagram credential stealers discovered on Google Play

ESET researchers discovered 13 new Instagram credential stealers on Google play and looked into the motivations behind their fraudulent schemes.

Lukas Stefanko09 Mar 20173 min. read


Aggressive ad-displaying Google Play app tricks users into leaving high ratings

Aggressive ad-displaying Google Play app tricks users into leaving high ratings

Aggressive ad-displaying Google Play app tricks users into leaving high ratings

ESET researchers have observed an increased number of apps on Google Play using social engineering techniques to boost their ratings, ranging from legitimate apps, through adware to malware.

Lukas Stefanko08 Mar 20174 min. read


Talking Android ransomware extorts victims

Talking Android ransomware extorts victims

Talking Android ransomware extorts victims

Talking Android ransomware sounds like something out of a science fiction movie. It's not - it's very real, explains ESET's Lukas Stefanko.

Lukas Stefanko01 Mar 20174 min. read


Released Android malware source code used to run a banking botnet

Released Android malware source code used to run a banking botnet

Released Android malware source code used to run a banking botnet

ESET researchers have discovered a new variant of botnet-forming Android banking malware based on source code made public a couple of months ago.

Lukas Stefanko23 Feb 20177 min. read


Sunny with a chance of stolen credentials: Malicious weather app found on Google Play

Sunny with a chance of stolen credentials: Malicious weather app found on Google Play

Sunny with a chance of stolen credentials: Malicious weather app found on Google Play

ESET has spotted a new banking malware on Google Play. Disguised as a weather forecast app, it steals banking credentials and locks screens.

Lukas Stefanko22 Feb 20174 min. read


New Android trojan mimics user clicks to download dangerous malware

New Android trojan mimics user clicks to download dangerous malware

New Android trojan mimics user clicks to download dangerous malware

Android users are exposed to a new malicious app imitating Adobe Flash Player and serving as an entrance gate for potentially any kind of dangerous malware

Lukas Stefanko14 Feb 20174 min. read