You Turned On Your Work Computer and All Your Files Are Gone? A Real Hacking Story

 

📋 Table of Contents

1. Why This Isn't Just Someone Else's Problem
2. How the Hackers Actually Got In
3. The Attack Breakdown by Stage
4. 3 Realistic Ways to Protect Yourself
5. Frequently Asked Questions

Why This Isn't Just Someone Else's Problem

It was a Monday morning. You get to the office, fire up your computer, and there it is—a weird memo file sitting right there on your desktop. You open it and it says something like "We've taken all your company files. Send us money and we'll give them back." This isn't a movie plot, folks. It actually happens.

Recently, Checkpoint Research (a major cybersecurity research group) released a report analyzing real attacks from a hacking group called "The Gentlemen." Yeah, the name sounds like some fancy British club, but these guys are actually a super organized and persistent cyber crime operation. When I read through their case, I thought "Yikes, this could totally happen to us too," so I decided to break it all down for you.

How the Hackers Actually Got In

The crazy thing about this group is that they don't rely on crazy technical wizardry. It all started with one email attachment that an employee received. Someone opened a malicious file (basically a virus), and boom—the hackers slipped right into the company's network from there.

They used something called an "Infostealer"—a nasty piece of malware that does exactly what the name says: it steals information. It quietly snatches passwords, cookies (login info), work documents, and all sorts of stuff from your computer. The scariest part? You have absolutely no idea it's happening.

Warning Always be suspicious of email attachments. Even if it looks like it came from someone you know, their account might already be compromised. Never, ever open files with weird extensions like .exe, .lnk, or .js.

The Attack Breakdown by Stage

Hackers don't just barge in and steal your stuff all at once. They actually work in stages. This particular attack unfolded like this:

Stage	What the Hackers Did	The Damage
Stage 1	Sent malicious email	Employee's PC gets infected
Stage 2	Scanned the internal network	Mapped out the company structure
Stage 3	Stole admin credentials	Got access to the entire system
Stage 4	Extracted data in bulk	Swiped confidential documents and customer info
Stage 5	Deployed ransomware	Locked all files and demanded money

Ransomware is malware that holds your files hostage. It locks up all your stuff and basically says "Pay up or never see your files again." In this case, they grabbed the data first and then deployed ransomware on top—so the company got hit twice.

TIP Thinking "I'm just a regular person, not an employee, so I'm safe"? Nope. Ransomware hits personal computers just as hard. Your family photos, important documents—all of it can become a hostage.

3 Realistic Ways to Protect Yourself

You don't need to buy some fancy security system. Here are just the things you can actually do right now.

1

Back up important files to an external hard drive or cloud storage. If you get hit with ransomware but you have a backup, you don't need to pay a dime. Services like Google Drive or Naver MYBOX are free and totally work.

2

Use a different password for each site. If one account gets compromised, every site using the same password is now at risk. If you can't remember them all, try social login (like through Naver or Kakao) or grab a password manager app like Samsung Pass or 1Password.

3

Don't click on links or open files from unknown sources. Even those text messages about package tracking, wedding invitations, or health check results should raise a red flag. To be safe, always go directly to the official app or website to verify.

Frequently Asked Questions

Q. If I get hit with ransomware, can I just pay them to get my files back?

A. Paying doesn't guarantee you'll actually get your files back. A lot of these criminals just take the money and disappear. That's why experts always say: don't pay. Report it to the authorities instead (Korea Internet & Security Agency: 118).

Q. I don't work at a company—can I still become a hacking target?

A. Hackers don't just go after big corporations. Actually, they often find it easier to target individuals or small businesses with weak security. Your personal smartphone and PC are absolutely at risk.

This whole incident might feel like it's some distant big company's problem, but honestly, it started with just one email. The kind you get every single day. You don't need to be a security expert to protect yourself. Just try one thing from what you read today, and I promise you'll be way less likely to lose your precious files. You've got this! 😊

References
Read the original - Check Point Research: DFIR Report The Gentlemen

DFIR Report – The Gentlemen & SystemBC: A Sneak Peek Behind the Proxy - Check Point Research