Lukas Stefanko

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

Latest Articles

ESET research

Crypto malware in patched wallets targeting Android and iOS devices

ESET research

BladeHawk group: Android espionage against Kurdish ethnic group

ESET research

Some URL shortener services distribute Android malware, including banking or SMS trojans

ESET research

Android stalkerware threatens victims further and exposes snoopers themselves

74 articles by Lukas Stefanko

ESET research

Crypto malware in patched wallets targeting Android and iOS devices

ESET research

Crypto malware in patched wallets targeting Android and iOS devices

ESET Research uncovers a sophisticated scheme that distributes trojanized Android and iOS apps posing as popular cryptocurrency wallets

Lukas Stefanko • 24 Mar 2022 • 14 min. read

ESET research

BladeHawk group: Android espionage against Kurdish ethnic group

ESET research

BladeHawk group: Android espionage against Kurdish ethnic group

ESET researchers have investigated a mobile espionage campaign that targets the Kurdish ethnic group and has been active since at least March 2020

Lukas Stefanko • 07 Sep 2021 • 6 min. read

ESET research

Some URL shortener services distribute Android malware, including banking or SMS trojans

ESET research

Some URL shortener services distribute Android malware, including banking or SMS trojans

On iOS we have seen link shortener services pushing spam calendar files to victims’ devices.

Lukas Stefanko • 20 Jul 2021 • 13 min. read

ESET research

Android stalkerware threatens victims further and exposes snoopers themselves

ESET research

Android stalkerware threatens victims further and exposes snoopers themselves

ESET research reveals that common Android stalkerware apps are riddled with vulnerabilities that further jeopardize victims and expose the privacy and security of the snoopers themselves

Lukas Stefanko • 17 May 2021 • 3 min. read

ESET research

APT-C-23 group evolves its Android spyware

ESET research

APT-C-23 group evolves its Android spyware

ESET researchers uncover a new version of Android spyware used by the APT-C-23 threat group against targets in the Middle East

Lukas Stefanko • 30 Sep 2020 • 8 min. read

ESET research

Welcome Chat as a secure messaging app? Nothing could be further from the truth

ESET research

Welcome Chat as a secure messaging app? Nothing could be further from the truth

ESET research uncovers a malicious operation that both spies on victims and leaks their data

Lukas Stefanko • 14 Jul 2020 • 6 min. read

ESET research

New ransomware posing as COVID-19 tracing app targets Canada; ESET offers decryptor

ESET research

New ransomware posing as COVID-19 tracing app targets Canada; ESET offers decryptor

ESET researchers dissect an Android app that masquerades as an official COVID-19 contact-tracing app and encrypts files on the victim's device

Lukas Stefanko • 24 Jun 2020 • 4 min. read

ESET research

Insidious Android malware gives up all malicious features but one to gain stealth

ESET research

Insidious Android malware gives up all malicious features but one to gain stealth

ESET researchers detect a new way of misusing Accessibility Service, the Achilles’ heel of Android security

Lukas Stefanko • 22 May 2020 • 5 min. read

Breaking news? App promises news feeds, brings DDoS attacks instead

After being targeted by an Android DDoS app, ESET seized the opportunity to analyze the attack and to help put an end to it

Lukas Stefanko • 11 May 2020 • 4 min. read