When Adobe admitted, on October 3, 2013, that their site had been hacked they estimate that 2.9 million passwords were compromised. According to a report by KrebsonSecurity.com it seems that Adobe was underestimate the scope of the hacking breach they suffered. The revised numbers could be up to 38 million passwords and credit information that might have fallen victim to the attack.
“So far, our investigation has confirmed that the attackers obtained access to Adobe IDs and (what were at the time valid), encrypted passwords for approximately 38 million active users,” said Adobe spokesperson Heather Edell [emphasis added]. “We have completed email notification of these users. We also have reset the passwords for all Adobe IDs with valid, encrypted passwords that we believe were involved in the incident—regardless of whether those users are active or not.”
It is still unknown just who is responsible or how much information they did actually get from this breach of security. Since the investigation is still on going and the extend of damage is unknown that anyone that has an account with Adobe act as though their account was compromised and change their passwords and check their credit for any unauthorized purchases. Just because you didn't receive a notification from Adobe you can't afford to assume that you were not one of the victims of the attack.
“We are still in the process of investigating the number of inactive, invalid and test accounts involved in the incident,” Edell said. “Our notification to inactive users is ongoing.”
When you do change your password there are a few rules that you should always follow:
Always use a mix of upper and lower-case numbers along with numbers and special characters.
The longer your password is the harder it is to crack but do not go overboard. A good length is between 8 and 12 characters.
Do not tell anyone your password even if it is someone you think can be trusted.
Do not use use your name, a pet's name, phone number, address or anything personal.
If you have some many passwords you need to write them down always keep them in a place that only you have access. Some good examples are in a lock box or an encrypted file of your computer that only you can access.
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