It is important to ensure that regular backups are in place and effective on all systems included in the scope of testing. This is best practice. It is incredibly rare that there are any adverse effects penetration testing on an environment, and Dionach take every precaution to ensure that the integrity and availability of our client’s network or system is not compromised in any way. Dionach conduct thousands of penetration tests per year without incident. However, it is never possible to give a 100% guarantee in any situation, and having backups is purely a precaution. We would however expect no adverse effects to be experienced, and the DDI of the tester is available to contact them immediately if anything untoward is noted.