What should I do if I encounter domain name hijacking? To solve domain name hijacking, this article is enough

in Internet operations and daily network use, domain name hijacking is a common and extremely harmful means of network attack. It will cause users to jump to malicious websites and false pages when visiting designated domain names, which will not only cause user information leakage, property damage, but also seriously damage the brand reputation and user trust of the website. Many people are often at a loss when encountering such problems and do not know where to start to solve them. This article will explain in detail the practical methods to solve domain name hijacking from identification, emergency treatment to long-term protection. It will help you quickly get rid of the trouble of domain name hijacking and ensure the normal use of domain names.

First, solve the domain name hijacking first learn to identify the signs?

want to efficiently solve the domain name hijacking, first of all to accurately determine whether they have suffered a domain name hijacking, to avoid misjudgment lead to useless operations.

1, website jump abnormal

this is the most intuitive sign of domain name hijacking, when entering a familiar domain name, the page did not jump to the expected official website, but turned to unfamiliar advertising pages, phishing sites or error pages that could not be displayed, and refreshed or replaced multiple times The problem still exists after the device, it is likely to encounter domain name hijacking.

2, access speed changes

the original access smooth domain name, suddenly appear slow loading, card or even timeout, after troubleshooting their own network failure, it may also be caused by domain name hijacking. Attackers by tampering with DNS resolution path, so that the request bypasses the malicious server, thereby slowing down the access speed.

two, solve the emergency treatment plan of domain name hijacking?

once it is confirmed that the domain name hijacking, the need to take immediate emergency measures to reduce the losses caused by hijacking, for the subsequent thorough solution to the domain name hijacking to buy time.

1, clear the local DNS cache

many domain hijacking is achieved by tampering with the local DNS cache, emptying the cache can quickly restore normal resolution. Windows users can enter ipconfig /flushdns the command prompt to perform the operation, Mac users can enter sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder command at the end point. After the operation is completed, revisit the domain name to see if it is back to normal.

2 Replacing public DNS servers

if the problem is not solved after the local cache is emptied, it may be that the DNS server used is hijacked. At this time, it can be replaced with a domestic public DNS server, such as Alibaba Cloud DNS 223.5.5.5, Tencent Cloud DNS 119.29.29.29, or an international Google DNS 8.8.8.8. After modification, restart the network device and try to access the domain name.

Third, to solve the domain name hijacking need to investigate the core link?

emergency treatment can only temporarily alleviate the problem, to completely solve the domain name hijacking, we need to deeply investigate the core links that may be attacked, and eliminate hidden dangers from the root cause.

1, check the domain name registration information

log in to the domain name registrar background to check whether the registration information, DNS server address, resolution records, etc. of the domain name have been tampered with. Some attackers will modify the DNS pointing of the domain name by stealing the registrar account, resulting in abnormal domain name resolution. If the information is found to be tampered with, immediately reset the registrar account password and restore the correct DNS configuration. This is a key step in solving domain name hijacking.

2, check the server configuration

if there is no abnormality in the domain name registration information, it is necessary to further check the configuration of the website server, including the DNS settings of the server, the jump rules of the website program, etc. Some attackers will invade the server and modify the .htaccess file or program code of the website to realize the domain name jump hijacking. At this time, the website data should be backed up in time, the server should be scanned to kill malicious programs, and the tampered configuration file should be restored.

IV. Long-term protection strategy to solve domain name hijacking?

solve the domain name hijacking can not only stay in the post-processing, but also to establish a long-term protection mechanism to reduce the risk of being hijacked from the source.

1, open DNSSEC security extension

DNSSEC is a security technology used to verify the authenticity of DNS resolution information. It can prevent attackers from tampering with DNS resolution records and effectively reduce the probability of domain name hijacking. At present, most mainstream domain name registrars support DNSSEC function. Website managers can log in to the registrar background to open the service, adding a layer of security for domain name resolution, and helping to solve the latent risk of domain name hijacking in the long run.

2, strengthen account security management

domain name registrar, server management platform account is a key target of attackers, once the account is stolen, the domain name and server can be easily hijacked. Therefore, set complex account passwords, change passwords regularly, and turn on two-factor authentication functions, such as SMS verification, Google Authenticator, etc., to avoid illegal login of the account.

To sum up, solving domain name hijacking is a complete process from identification to processing to long-term protection. It is necessary to accurately identify the signs of hijacking, then quickly stop losses through emergency treatment, then investigate the core links to eliminate root causes, and finally establish a long-term protection mechanism to reduce risks. As long as these practical methods are mastered, both website managers and ordinary users can effectively deal with domain name hijacking and ensure the normal use of domain names and cyber security.