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Leonid Grustniy

124 articles

  • spam

Top 4 dangerous file attachments

We explain what file types cybercriminals most often use to hide malware, and how to avoid getting infected.

  • Leonid Grustniy

  • May 31, 2019

Baltimore is hardly the first and unlikely the last city to be encrypted by ransomware.
  • Ransomware

Baltimore encrypted

For three weeks, Baltimore’s administration has been struggling with the aftermath of a ransomware attack.

  • Leonid Grustniy

  • May 30, 2019

  • privacy

Mission possible: How to fend off online trackers

The tools that can help preserve your online privacy.

  • Leonid Grustniy

  • April 22, 2019

  • small business

Startups and information security

What makes startups dependent on data protection for success?

  • Leonid Grustniy

  • April 16, 2019

EXE files can pose a risk not only in Windows, but in macOS too
  • macOS

An EXE infection for your Mac

Everyone knows that EXE files can be dangerous for computers running Windows. But it turns out that EXE files can infect macOS too.

  • Leonid Grustniy

  • April 5, 2019

  • privacy

What’s wrong with “legal” commercial spyware

Commercial spying apps — stalkerware — are not malware in the proper sense of the term, but it’s better to avoid using them anyway.

  • Leonid Grustniy

  • April 3, 2019

Apps that demand access to calls and SMS messaging without good reason are being kicked off Google Play. We explain what threats might arise
  • Android

New Google Play policy cuts both ways

Apps that demand access to calls and SMS messaging without good reason are being kicked off Google Play. We explain what threats might arise.

  • Leonid Grustniy

  • March 26, 2019

  • IoT

Hacking smart car alarm systems

Systems designed to guard against car theft can be used to track, immobilize, and steal vehicles.

  • Leonid Grustniy

  • March 18, 2019

  • email

Out-of-office replies: How not to spill too many beans

The hidden dangers of out-of-office messages.

  • Leonid Grustniy

  • March 6, 2019

Fake Apex Legends for Android gets you a Trojan instead
  • Android

Fake Apex Legends: The battle royale of malware

Malware disguised as Apex Legends for Android.

  • Leonid Grustniy

  • March 1, 2019

Adult websites are often seen as a security threat, but few know that Trojans could be after their porno site accounts
  • porn

Trojans stealing porn site accounts

Adult websites are often seen as a security threat, but few know that Trojans could be after their porn site accounts.

  • Leonid Grustniy

  • February 25, 2019

  • jackpotting

The ATM of Fortune

Can an ATM turn into a slot machine? WinPot malware helps its owners win big at the “ATM game.”

  • Leonid Grustniy

  • February 21, 2019

  • tips

Five questions to ask your Internet installer

Things you should know about your home Internet connection: How to be sure it is safe and waste no time calling tech support.

  • Leonid Grustniy

  • February 8, 2019

  • phishing

Hunting for Office 365 accounts

Cybercriminals are bypassing mail spam filters by hiding documents with a malicious link in SharePoint Online.

  • Leonid Grustniy

  • January 31, 2019

  • human factor

An ex-employee’s cyberrevenge

Ex-employees can go to extremes for the sake of revenge. How to terminate a work relationship safely and securely.

  • Leonid Grustniy

  • January 16, 2019

  • mobile devices

Out-of-office security

Employees going away for the winter break? We explain what to do to keep trips from turning into corporate data leaks.

  • Leonid Grustniy

  • December 25, 2018

  • fraud

Blackmail demand claims to have nailed you watching porn

They say they have video of you watching porn, threaten to send it to your friends, and demand ransom in bitcoins? Don’t pay! We explain how this scam works.

  • Leonid Grustniy

  • December 21, 2018

  • Android

The Rotexy Trojan: banker and blocker

We take a look at the Rotexy mobile Trojan: where it comes from, how it behaves, and how to get rid of it using a couple of regular SMS.

  • Leonid Grustniy

  • November 22, 2018

  • tips

Black Friday: How to pay with your card, not your card details

Banking Trojans are increasingly focused on online stores. We explain how not to become a victim of malware during the annual holiday sales.

  • Leonid Grustniy

  • November 19, 2018

  • threats

Mobile beasts and where to find them — part three

Let’s talk about mobile malware that can empty your bank account or spy on you.

  • Leonid Grustniy

  • September 21, 2018

  • Internet

Unattended corporate websites cause headaches

Forgotten online resources can be used for extortion or phishing

  • Leonid Grustniy

  • September 14, 2018

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