Top 15 Cyber Threats and Impact on Business

Here are 15 significant data breaches and their impact on businesses:

Yahoo (2013-2014)

Over 3 billion user accounts were compromised, leading to a loss of user trust and valuation decline, which ultimately contributed to Verizon reducing its acquisition price by $350 million1.

Equifax (2017)

The personal information of approximately 147 million people was exposed, leading to legal settlements, regulatory fines, reputational damage, and a drop in stock price2.

Marriott (2014-2018)

Hackers gained unauthorized access to the personal data of around 500 million guests, resulting in reputational damage, legal consequences, and a decline in customer trust3.

Target (2013)

Hackers stole the credit and debit card information of approximately 40 million customers during the holiday shopping season. The breach resulted in financial losses, a decline in sales, and reputational damage to the company4.

eBay (2014)

Cybercriminals gained access to a database containing personal information of approximately 145 million users. The incident negatively impacted user trust and caused eBay’s stock price to drop5.

Uber (2016)

The personal information of over 57 million users and drivers was exposed. Uber faced fines, lawsuits, and a decline in customer and driver trust6.

Sony PlayStation Network (2011)

The breach resulted in the compromise of personal information, including credit card details, of around 77 million users. Sony faced reputational damage, regulatory scrutiny, and financial losses7.

Anthem (2015)

Hackers obtained sensitive data of approximately 78.8 million current and former customers, leading to reputational damage, legal and regulatory consequences, and significant financial expenses8.

JPMorgan Chase (2014)

Around 76 million households and 7 million small businesses were affected, causing reputational damage and scrutiny from regulators and investigators9.

Home Depot (2014)

The breach exposed payment card data of approximately 56 million customers. The incident resulted in financial losses, reputation damage, and lawsuits10.

LinkedIn (2012)

Hackers compromised the passwords of approximately 117 million accounts, leading to reputational damage and financial costs associated with strengthening security measures11.

Adobe (2013)

The breach affected around 38 million users, resulting in reputational damage, legal consequences, and financial losses to address the incident and implement enhanced security measures12.

AOL (2004)

The exposure of search queries and other personal data of 92 million AOL users led to reputational damage and raised privacy concerns13.

Heartland Payment Systems (2008):

The breach compromised credit and debit card information of over 134 million customers, causing significant financial losses, lawsuits, and reputational damage14.

Office of Personnel Management (2015)

The breach exposed sensitive personal information of approximately 22 million individuals, including federal employees and contractors. The incident raised national security concerns, damaged the agency’s reputation, and led to Senate hearings15.

These data breaches underscore the significant impacts on businesses, including financial losses, reputational damage, legal consequences, and erosion of customer trust and confidence.

Please note that this is a brief overview of some major data breaches, and the impacts can vary for different organizations.


common cyber security threats



Malware, or malicious software, is a common type of cyberattack that encompasses various subsets such as ransomware, trojans, spyware, viruses, worms, keyloggers, bots, and cryptojacking. These programs or code are created with the intent to harm computers, networks, or servers.


Phishing attacks involve tricking individuals into revealing sensitive information, such as passwords or credit card numbers, by disguising as a trustworthy entity through fraudulent emails or websites.

Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) attacks

DoS attacks overwhelm a system with traffic, rendering it unable to respond to legitimate requests. In DDoS attacks, multiple compromised devices are used to launch the attack.

Social engineering

Social engineering involves manipulating individuals into divulging confidential information or performing certain actions through psychological manipulation

Password attacks

Attackers may use various techniques, such as brute-force attacks or dictionary attacks, to gain unauthorized access to systems or accounts by guessing or cracking passwords.

Insider threats

Insider threats involve individuals within an organization who misuse their privileges or access to deliberately harm the organization’s security.

It is important to implement comprehensive security measures, such as regularly updating software, using strong and unique passwords, practicing safe browsing habits, and educating employees about cyber threats, to mitigate these common cyber security threats.




Source: Reuters. (2017). Yahoo says all 3 billion accounts hacked in 2013 data theft. Retrieved from ↩

Source: Equifax. (2017). Equifax Announces Cybersecurity Incident Involving Consumer Information. Retrieved from ↩

Source: Marriott. (2018). Marriott Announces Starwood Guest Reservation Database Security Incident. Retrieved from ↩

Source: Target. (2014). Target Provides Update on Data Breach and Financial Performance. Retrieved from ↩

Source: eBay. (2014). eBay Inc. To Ask eBay Users to Change Passwords.


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