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someone got into my server, suspicious activity in logs — what to do immediately?

OOkan U***ExpertCommunity member
Joined
Apr 2023
Message
286
#1

found weird activities in the logs this morning. 500 files deleted from one account, database access, mail lists scanned. i think the hacker is still in the system. i'm panicking. what should i do now — shut down the site, notify the hosting company?

is there an emergency checklist? what do i do in the first hour? should i fully restore the server? can i recover the data? is my customers' (10k people) data at risk?

after that: police, insurance, post-mortem. should i do these in order? is forensic investigation expensive?

RRamazan K***MemberCommunity member
Joined
Jan 2025
Message
33
Most Helpful#2

fill out the complaint form at USOM (cyber security center), get consultancy. police complaint online: via the cybercrime.gov.tr portal.

AAleyna K***New member
Job title
Quality control inspector
Sector
Livestock
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120-person company
Joined
Jun 2026
Message
1
#3

You're right, I've been down that road too. Hasty decisions become decisions you have to fix six months later.

When making decisions, write down the worst-case scenario too, not just the best. Correct me if I'm wrong.

DDoruk U***Member
Job title
Technical service technician
Sector
Cosmetics
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two-branch business
Joined
Aug 2025
Message
137
#4

Let me summarize the topic, since several different answers were given. Everything goes well for the first three months; problems arise in the fourth.

BBeyza K***MemberCommunity member
Joined
Dec 2022
Message
3
#5

i didn't know that. tbh if permission and scope aren't in writing, don't start that test.

if the notification path is long notifications don't arrive; missing notifications mean delayed incident detection but i'm also curious if anoyne does it differently.

EElif B***Member
Job title
Courier coordinator
Sector
Healthcare services
Organization type
a company within a holding
Joined
Dec 2023
Message
228
#6

Timely topic. If you scold false alarms nobody will report again.

If you have questions write them; I'll answer as best I can.

GGürkan K***Member
Job title
Human Resources Specialist
Sector
Catering
Organization type
120-person company
Joined
Dec 2024
Message
157
#7

Three different views emerged they all complement each other. If it's your first time start small; scaling comes later.

Taking notes for two weeks yields better results than a six-month estimate. If you have questions, write them; I'll answer as best I can.

ZZafer K***MemberCommunity member
Joined
Nov 2024
Message
1
#8

Thanks, this was very helpful... If you scold false alarms, nobody will report again.

Most time waste accumulates in tasks waiting for approval. btw that's all sorry if I went on too long.

GGürkan A***MemberCommunity member
Joined
Apr 2022
Message
67
#9

We need to make a distinction here. Your time to detect an issue directly determines its cost.

Of course, it varies if your situation is different.

NNecati B***Member
Job title
Intern
Sector
Cleaning services
Organization type
8-person team
Joined
Sep 2024
Message
44
#10

Exactly, and not many people know this. When making decisions, write down the worst-case scenario too, not just the best.

Correct me if I'm wrong.

GGökhan G***MemberCommunity member
Joined
Nov 2022
Message
223
#11

I went through the same thing two years ago. Security isn't absolute; it's about making attacks not worth the effort.

Taking notes for two weeks yields better results than a six-month estimate. Correct me if I'm wrong.

İİsmail Ş***MemberCommunity member
Joined
May 2025
Message
177
#12

I went through the same thing.

GGamze D***Veteran
Job title
Courier coordinator
Sector
Food wholesale
Organization type
300-person organization
Joined
Jan 2024
Message
209
#13

Yes, that's exactly how it is with server compromised what to do. Solutions that work at a small scale collapse when you grow; I learned this late.

Start with a small trial; don't commit to everything at once.

MMurat S***Member
Job title
Purchasing manager
Sector
Electrical-electronics
Organization type
sole proprietorship
Joined
Jan 2022
Message
79
#14

Absolutely. If I were to add anything: Solutions that work at a small scale collapse when you grow; I learned this late.

Most time waste accumulates in tasks waiting for approval. honestly just leaving this note, it might be useful.

HHasan K***Member
Job title
Sales Manager
Sector
Healthcare services
Organization type
chain store
Joined
Sep 2024
Message
404
#15

Great work. Taking notes for two weeks yields better results than a six-month estimate.

Security isn't absolute; it's about making attacks not worth the effort.

HHüsniye U***Member
Job title
Secretary
Sector
Automotive aftermarket
Organization type
boutique agency
Joined
Feb 2025
Message
173
#16

There's a part I don't understand. Everything goes well for the first three months; problems arise in the fourth.

MMustafa S***Member
Job title
Human Resources Manager
Sector
Jewelry
Organization type
two-branch business
Joined
May 2024
Message
43
#17

great work but most time waste accumulates in tasks waiting for approval.

FFatih K***Member
Job title
Courier coordinator
Sector
Logistics
Organization type
40-person manufacturing company
Joined
Aug 2023
Message
106

Doki · Log management setup · 2026

#18

Let me share my experience. Don't hesitate to ask; those who don't ask always pay more.

İİbrahim T***MemberCommunity member
Joined
Aug 2023
Message
279
#19

There is something to watch out for. Your time to detect an issue directly determines its cost.

When you try to change everything at once, nothing settles. If I were you, I'd go this route.

SSelin T***Member
Job title
Software developer
Sector
Printing
Organization type
40-person manufacturing company
Joined
Oct 2025
Message
409
#20

I went through the same thing two years ago. Your time to detect an issue directly determines its cost.

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