Lukas Stefanko

Bio

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

Articles by author

Google

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 Stefanko 9 Mar 2017 - 02:00PM

Google

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 Stefanko 8 Mar 2017 - 02:00PM

Ransomware

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 Stefanko 1 Mar 2017 - 11:00AM

Malware

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 Stefanko 23 Feb 2017 - 02:00PM

Malware

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 Stefanko 22 Feb 2017 - 03:00PM

Android

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 Stefanko 14 Feb 2017 - 02:00PM

Android

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 Stefanko 3 Aug 2016 - 01:34PM

Cybercrime

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 Stefanko 15 Jul 2016 - 10:30AM

Android

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 Stefanko 14 Jul 2016 - 02:30PM

Scams

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 Stefanko 9 Jun 2016 - 02:30PM

Scams

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 Stefanko 14 Apr 2016 - 02:30PM

Scams

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 Stefanko 6 Apr 2016 - 05:21PM

Malware

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 Stefanko 9 Mar 2016 - 02:49PM

Malware

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 Stefanko 24 Feb 2016 - 02:45PM

News

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 Stefanko 18 Feb 2016 - 10:49AM

Possibly Unwanted Applications

Android AdDisplay using anti‑bouncer technique

In order to help make Google Play a safer place for Android users, ESET continues to monitor the official Android app market for malicious or potentially unwanted applications.

Lukas Stefanko 8 Oct 2015 - 12:49PM

Android

Android trojan drops in, despite Google’s Bouncer

ESET recently discovered an interesting stealth attack on Android users, an app that is a regular game but with an interesting addition: the application was bundled with another application.

Lukas Stefanko 22 Sep 2015 - 12:48PM

Malware