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Leaked! Confessions of a Joomla DEV

Paul van Jaarsveld
Kalemanzi Media Solutions
@kalemanzi
Overview
●

Hackin 'n crackin (Why, who, what?!)

●

Prevention

●

Cure

●

Discussions / questions
Why, who, what?
●

Why do people want to “hack” sites?

●

Who / what does it?

●

What do they do?
Defaced – peer recognition
Various forms of attacks
●

SQL injection – make mysql run malicious
commands

●

Known vulnerabilities of outdated scripts

●

Poorly designed code

●

Generic passwords

●

Denial of Service / slashdot effect
DDOS attacks
Spam with a purpose
Payload
Phishing
Prevention: Your neighborhood
●

Hosting provider NB!

●

Rather Apache Linux than Win

●

Avoid shared hosting

●

PHP5, CGI not module, register_globals

●

PHP.ini settings (remote url incl etc.)

●

mod_security

●

Htaccess.txt .htaccess

●

Cpanel, ftp, ssh password etc.
Prevention: Your house
●

Bricks – Latest Joomla

●

Domestic workers – extensions bg. check

●

House contents – user data / content

●

The windows – what can be seen

●

The doors / gates – points of entry

●

Keys! NB. PSWD – what Master key?!

●

Radio and tv / internet – external / feeds

●

CCTV / alarm system – Monitor security

●

Insurance – regular incremental backups
Cracked, now what?!
Recovery Action plan!
●

●
●

●
●

●

Remove site from public_html (rename
script - rn public_html public_html_inf
Change passwords (sql, ftp, cpanel etc.)
Find a backup that was done before
infection and keep it handy
Do a comprehensive site audit
Find the source of the infection – use shell
script, common sense, versions etc.
Choose recovery strategy:
Strategy
●

Repair current instance eg. Remove
malicious code

●

Restore clean backup and fix holes

●

Make site live

●

Make sure the site is clean!

●

Have a plan in place for future
Questions
●

What extensions do you use?
Let's make a list right now!

●

How do you handle your hacked sites?
Welcome to the resistance ;-)

Paul van Jaarsveld
Kalemanzi Media Solutions
@kalemanzi

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Leaked! Confessions of a Joomla DEV

  • 1. Leaked! Confessions of a Joomla DEV Paul van Jaarsveld Kalemanzi Media Solutions @kalemanzi
  • 2. Overview ● Hackin 'n crackin (Why, who, what?!) ● Prevention ● Cure ● Discussions / questions
  • 3. Why, who, what? ● Why do people want to “hack” sites? ● Who / what does it? ● What do they do?
  • 4. Defaced – peer recognition
  • 5. Various forms of attacks ● SQL injection – make mysql run malicious commands ● Known vulnerabilities of outdated scripts ● Poorly designed code ● Generic passwords ● Denial of Service / slashdot effect
  • 7. Spam with a purpose
  • 10. Prevention: Your neighborhood ● Hosting provider NB! ● Rather Apache Linux than Win ● Avoid shared hosting ● PHP5, CGI not module, register_globals ● PHP.ini settings (remote url incl etc.) ● mod_security ● Htaccess.txt .htaccess ● Cpanel, ftp, ssh password etc.
  • 11. Prevention: Your house ● Bricks – Latest Joomla ● Domestic workers – extensions bg. check ● House contents – user data / content ● The windows – what can be seen ● The doors / gates – points of entry ● Keys! NB. PSWD – what Master key?! ● Radio and tv / internet – external / feeds ● CCTV / alarm system – Monitor security ● Insurance – regular incremental backups
  • 13. Recovery Action plan! ● ● ● ● ● ● Remove site from public_html (rename script - rn public_html public_html_inf Change passwords (sql, ftp, cpanel etc.) Find a backup that was done before infection and keep it handy Do a comprehensive site audit Find the source of the infection – use shell script, common sense, versions etc. Choose recovery strategy:
  • 14. Strategy ● Repair current instance eg. Remove malicious code ● Restore clean backup and fix holes ● Make site live ● Make sure the site is clean! ● Have a plan in place for future
  • 15. Questions ● What extensions do you use? Let's make a list right now! ● How do you handle your hacked sites?
  • 16. Welcome to the resistance ;-) Paul van Jaarsveld Kalemanzi Media Solutions @kalemanzi