Many people always think that network security has little to do with themselves, but this is not the case.
Last month, the topic of "nationwide disconnection" attracted the attention of many netizens.
Meals can not be swiped to check out, app can not be used, hospital patients can not swipe card checkout, securities trading system can not be used normally...
In our daily life, such as chatting, short videos, WeChat pay, etc. are closely related to network security.
Without paying attention to network security, the small may bring us some trouble, and the large may cause us monetary losses.
Recently, European electronic retail giant MediaMarkt suffered a ransomware attack, according to the Bleeping Computer website, the attackers initially demanded a ransom of up to $240 million!
MediaMarkt, Europe's largest consumer electronics retailer, has more than 1,000 stores in 13 countries, employs around 53,000 people and generates annual sales of €20.8 billion.
On the evening of November 8, MediaMarkt's internal cybersecurity personnel immediately shut down their internal IT systems after discovering that the company's encrypted servers and workstations had suffered a cyberattack to prevent the attack from spreading.
A follow-up company conducted an internal investigation and found that the attack affected many of the company's retail stores in Europe, mainly in the Netherlands.
Immediately after the cyberattack, MediaMarkt issued an internal statement telling employees to avoid using the encryption system and disconnecting the register from the network.
The move caused a lot of trouble for MediaMarkt's operations.
Stores can currently only sell existing items from the store and cannot make online purchases. In addition to this, due to cyber attacks, it is not possible to deliver to your door or return goods.
Through relevant security agencies, media BleepingComputer has confirmed that the Hive hacking group is behind the ransomware attack.
The group initially demanded a huge ransom of $240 million from MediaMarkt, but through past extortion case studies, the ransomware group often ended up demanding a ransom payment much lower than the initial offer.
It is not only foreign companies that are plagued by hackers, but also domestic companies that are also plagued by attacks.
In recent years, the number of DDoS attacks has been increasing, and the peak traffic has been constantly refreshing the upper limit. According to relevant research reports, the number of DDoS attacks in the first half of 2021 hit a record high, and the number of attacks increased by 33% compared with the same period last year.
Previously, after cracking down on an organization hiding abroad to carry out DDoS attacks to extort domestic Internet companies, the Shenzhen public security organs sentenced 11 people to prison terms ranging from one to two years for "damaging computer information systems."
Since July 2021, many manufacturers have posted that their newly launched games have been attacked by DDoS from ACCN, and the server has been paralyzed.
At the same time, the ACCN extorted them, saying that as long as a certain "protection fee" was paid, the attack would be stopped.
DDoS has become a major heart disease shared by the Internet industry due to its low cost, strong destructive power, and difficulty in tracing the black hand behind the scenes, and even large enterprises are also deeply disturbed.
In March 2018, sites such as Google, Amazon, and even Pornhub were hit by unprecedented high-traffic DDoS attacks, and website services were paralyzed.
Let's take an analogy:
You opened a restaurant with 50 seats, because of the good taste, the business is particularly prosperous, while the shop of the old Wang family next door is not favored.
In order to deal with you, the old king next door called 50 people to sit in your shop, ask you east and west, that is, do not order, and what is even more disgusting is that they still occupy a seat and do not leave, so that real customers do not even have a place to sit after entering the store, so they have to go to other homes to eat.
The pattern of DDoS attacks is like this, using useless traffic to run server resources, resulting in normal users being unable to log in.
With the rapid development of 5G, the scale, attack power and frequency of DDoS attacks may further increase in the future.
DDoS incidents are not uncommon, which will pose a great threat to the stability of websites and business systems, resulting in serious consequences such as business system shutdowns and data breaches.
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For the victim, not only face the loss of customers, the obstruction of business, but also face the penalties of regulators, in the face of DDoS attacks, it is often useless to make up for it afterwards, and taking security measures to prevent attacks in advance is an effective solution.