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Linux Server Security + PLESK

This project received 22 bids from talented freelancers with an average bid price of $18 USD / hour.

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22
Project Description

Hi,

I have my domain hosted with 1and1 hosting services based on a linux server. Overnight everyday I have a CPU overload which cause my emails stop working normally, this cause instability and recurrent issue.

I guess my server has been compromised.

I need a Linux security expert to get my server logs, identify the issue and secure my server for these issues not to happen again.
I will need to receive the explanation of the issue and the corrective proposals before implementing them.

s16322141:~ # ps -eo pcpu,pid,user,args | sort -k 1 -r | head -10
%CPU PID USER COMMAND
0.5 993 postfix ./[url removed, login to view] -f -P /var/run/ctmilter/ctmilter -u postfix -G -d MISC -s -I -p /var/spool/postfix/ctmilter/[url removed, login to view] -O --ctasd-outbound-port 8088 -f
0.5 25758 psaadm /usr/bin/sw-engine-cgi -c /usr/local/psa/admin/conf/[url removed, login to view] -d auto_prepend_file=[url removed, login to view] -u psaadm
0.4 26177 root -bash
0.4 25760 psaadm /usr/bin/sw-engine-cgi -c /usr/local/psa/admin/conf/[url removed, login to view] -d auto_prepend_file=[url removed, login to view] -u psaadm
0.4 25759 psaadm /usr/bin/sw-engine-cgi -c /usr/local/psa/admin/conf/[url removed, login to view] -d auto_prepend_file=[url removed, login to view] -u psaadm
0.2 26171 root sshd: root@pts/0
0.1 1108 popuser spamd child
0.0 9 root [kworker/1:0]
0.0 988 root [kconservative]

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