site gives me errors

[zietsh]

[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4741: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/hooks/index.php:253)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4743: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/hooks/index.php:253)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4744: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/hooks/index.php:253)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4745: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/hooks/index.php:253)

Well this is what I get. I am a total php noob so I have no clue what to do with this, though my low technical skills assume I got to blame the server(?).
Forum is zoomed in for me an, well surprise the header is agfworgaerarjifagbqa.


EDIT:

Now I also got this:

Warning: Cannot modify header information - headers already sent by (output started at /var/www/virtual/dswp.de/htdocs/old/includes/hooks/index.php:253) in /var/www/virtual/dswp.de/htdocs/old/includes/functions.php on line 4741

Warning: Cannot modify header information - headers already sent by (output started at /var/www/virtual/dswp.de/htdocs/old/includes/hooks/index.php:253) in /var/www/virtual/dswp.de/htdocs/old/includes/functions.php on line 4743

Warning: Cannot modify header information - headers already sent by (output started at /var/www/virtual/dswp.de/htdocs/old/includes/hooks/index.php:253) in /var/www/virtual/dswp.de/htdocs/old/includes/functions.php on line 4744

Warning: Cannot modify header information - headers already sent by (output started at /var/www/virtual/dswp.de/htdocs/old/includes/hooks/index.php:253) in /var/www/virtual/dswp.de/htdocs/old/includes/functions.php on line 4745

.... my tummy tells me here that this is my fault somehow...

[wurst]

sry, an ftp account was hacked/spied, someone changed huge amount of files.

these lines helped me alot:

Code: Select all

find ./ -type f -name *.htm* | xargs sed -i 's/<!--da6a49-->.*<!--\/da6a49-->//'
find ./ -type f -name *.js | xargs sed -i '/*da6a49*/,/da6a49*/d'
find ./ -type f -name *.php | xargs sed -i '/#da6a49#/,/da6a49#/d'


the added code looked like this:

maicious_js.txt

(5.02 KiB) Downloaded 1217 times

found 1 notebook with a filezilla ftp client which contained all the hacked sites ftp accounts.
reinstall tomorrow (:

Ah. I have 3 IPs @ Wed May 29 13:31:21 2013 CEST

194.24.242.15
195.93.201.113
92.243.20.41