CityJerks Data Breach

CityJerks Data Breach: Safeguarding Your Online Life

In an age where our digital footprints are increasingly becoming a core part of our lives, the recent CityJerks data breach has once again reminded us of the critical importance of protecting our personal information. With millions of accounts compromised, the fallout from this breach serves as a wake-up call for both individuals and organizations to reassess their online security practices. In this blog post, we will delve into the details of the CityJerks data breach, explore the potential implications for affected users, and provide practical tips for safeguarding your online presence.

Understanding the CityJerks Data Breach:

The CityJerks data breach unfolded in early 2023, when the company discovered unauthorized access to their user database. Hackers managed to exploit a vulnerability in the system, gaining access to sensitive user information such as usernames, email addresses, passwords, and potentially even payment details. The scale of this breach is significant, affecting millions of CityJerks users and potentially putting their personal and financial information at risk.

The Implications for Affected Users:

For users whose accounts were compromised in the CityJerks data breach, the potential consequences can be far-reaching. Here are some of the risks they may face:

  • Account Takeovers: With access to usernames and passwords, malicious actors can gain unauthorized control over user accounts. This could lead to identity theft, unauthorized purchases, or the manipulation of personal information.
  • Phishing and Social Engineering Attacks: Armed with email addresses and other personal data, hackers may craft convincing phishing emails or engage in social engineering tactics to deceive users into sharing further sensitive information.
  • Credential Stuffing Attacks: As users tend to reuse passwords across multiple platforms, hackers may try the stolen credentials on other websites, hoping to gain access to additional accounts.

Protecting Your Online Life:

While the CityJerks data breach underscores the vulnerability of our online accounts, there are proactive steps you can take to strengthen your digital defenses. Consider the following best practices:

  • Enable Two-Factor Authentication (2FA): Implement 2FA whenever possible to add an extra layer of security. This typically involves a combination of a password and a temporary verification code, reducing the chances of unauthorized access.
  • Use Unique, Strong Passwords: Avoid reusing passwords across multiple platforms and opt for complex combinations of letters, numbers, and symbols. Consider using a reputable password manager to securely store and generate passwords.
  • Monitor Financial Statements: Regularly review your financial statements to detect any suspicious activity. Report any unauthorized transactions to your financial institution immediately.
  • Stay Informed About Data Breaches: Subscribe to breach notification services and stay updated on the latest news about data breaches. This will help you take prompt action if your accounts are compromised.
  • Regularly Update Software and Devices: Keep your operating system, antivirus software, and applications up to date. Software updates often include crucial security patches that address vulnerabilities.


The CityJerks data breach serves as a stark reminder that our personal information is always at risk in the digital realm. By understanding the implications of such breaches and implementing robust security measures, we can better protect ourselves from falling victim to cybercriminals. Remember, safeguarding your online presence is an ongoing process that requires vigilance and a proactive approach. Stay informed, stay secure, and take control of your digital life.


4,23% of leaked digital identities in May, 2019 are D/A/CH accounts

4,23% of the compromised accounts (email address and password combos) in May, 2019 were from the D/A/CH region. Only in Germany 461.552 hacked digital identities were discovered.

Gain deeper insights on hacked online credentials by obtaining the free BULIDSEC Digital Identity Anti-Theft Report for May, 2019.

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BULIDSEC EMAIL IDENTITY GUARD The largest data breaches of all time

The Largest Data Breaches of All Time

Trust is good, but control is even better

Identity theft is at an all-time high. Not even the large, well-known online services seem to be immune to hacks, as recent data breaches at Reddit, Twitter and LinkedIn show. In this blog post, we will take an in-depth look at some of the largest data breaches of all time and find out how to make sure cyber criminals don’t take advantage of your data.

The Leaked Online Identity Problem

Your online digital identity is only as safe as the protection measures of the services you trust. Unfortunately, users are discovering time and time again that their trust is betrayed. Some services are simply not big enough to be able to invest time and budget in cyber security. And even for those that do, there is no hacker-proof business model. Some online services claim they provide secure services, but there is always a chance of an undiscovered loophole or a component that can be hacked by savvy cyber criminals.


Case 1: Reddit Data Breach

While many of the well-known online services spend a considerable chunk of their budget on preventing hacks from happening, at the same time they are also a very attractive target for cyber criminals. The more popular an online service is, the more valuable its data are . Case in point: Reddit, a social media platform with over 300 million users, was targeted earlier this year. The internal two-factor authentication system was bypassed by unknown cyber criminals, after which they gained access to an internal database backup as well as user passwords. Even though Reddit claims the passwords were salted and hashed (preventing attackers from accessing them directly as plain text), they recommended that all affected users should change their password.

Case 2: Twitter Vulnerability

Reddit is not the only large social media service that got hit by an embarrassing data breach. Earlier this year, Twitter had to admit that a bug had put the data of all of its 330 million users at risk. Even though the service had measures in place to mask passwords by using a hashing algorithm, it turned out a log file displayed all user passwords in plain text. As with the Reddit hack, Twitter also could not guarantee that the passwords would not be abused, recommending a password change to all 330 million victims.

Case 3: LinkedIn Data Breach

Both Twitter and Reddit were forthcoming and transparent: they informed the users who were affected to make sure they had the chance to take countermeasures. Unfortunately, that is not always the case. Professional social network LinkedIn was hacked in 2012. A large number of passwords was stolen, but at the time, the company only published minimal information about what happened. Early reports claimed that 6.5 million accounts were compromised. In 2016, media discovered that actually a staggering 117 million users were affected, some of which were still using the same, hacked vulnerable password for other services, four years after it had been compromised.

The Situation is out of Control

Since mid of December 2018, the situation seems to be not anymore under control. Breaches such as Collection #1 – 773M password megabreach, Collection #2-5 dump leaks 2.2bn usernames and passwords and Breach of ‘’ exposes 763 million records generated extreme fear and uncertainness for many people. However, a deeper analysis of most of the recent data breaches shows once again that the records of a data breach need to be carefully analyzed for fake records and outdated credentials that have been already publicly available.

Effective Countermeasures Against Pawned Digital Identities

Along to the quality of the identity data that becomes public every day, it is crucial to increase the overall awareness about the topic. If even the large, well-known online services cannot guarantee that they protect your digital identity, it is better to take matters into your own hands. Rather than not using the services at all, make sure you enable all enhanced security that they offer, such as two-factor authentication. Take care to choose a strong password  to make sure that cyber criminals cannot take over your identity by simply guessing.

Finally, ensure that you are immediately informed if your digital identity is breached. By using BULIDSEC Email Identity Guard, you are notified if your email address is part of a data breach and the containing record is not a fake, making sure you can quickly take countermeasures to minimize impact.

Trust is good – Control is even better

Many of my daily activities take place online. From buying travel tickets, dating with friends through various social media, weekly grocery shopping, watching TV via Netflix and Co. For my online activities, I always use different passwords in combination with all security-related mechanisms of the individual online services, such as various types of two-factor authentication. Nevertheless, my online identity has been compromised several times. By using BULIDSEC Email Identity Guard, I can now continuously and independently monitor my online identities, and apply the recommended by BULIDSEC measures, when appropriate.
Susan F.