Top 10 issues to be considered to ensure cloud data security

Security concerns are an important reason why many enterprises are reluctant to "move towards the cloud. As cloud computing will cause many changes in the operating mode, it is normal for enterprises to exercise caution when using the cloud.
After the data is migrated from the internal server to the cloud, it seems that the problem is more serious, and the data access is also mobile. Of course, the company and IT departments are working to reduce the security threats to cloud data.
1And know where the data is.
If you do not know where the data is, how can we ensure its security? Of course, firewalls and intrusion detection and defense can prevent most intruders, and Data Encryption can also make data more secure. However, when you terminate the service or when the cloud supplier fails, do you know where the data exists? The ability to point to a machine and say that your data is on this computer is good for ensuring data security in the cloud. Dedicated hardware is the key to enabling cloud computing services to comply with the strictest security standards.
2Frequently back up data.
One of the most easily overlooked aspects of cloud computing is also the simplest way to strengthen data control: no matter what happens, you have secure data backup. Complete data backup not only helps to ensure data security, but also ensures peace of mind.
3Ensure that the server or data center attaches importance to security issues.
By knowing which server or data center the data is located, enterprises can detect and investigate all feasible security methods they have deployed. Enterprises can check whether their security mechanisms comply with authoritative security certifications. If the server or data center can provide manageable services, this can also add many benefits and specialized technologies to the enterprise, so that the application, data, business, and so on can be more flexible. For example, manageable firewalls and manageable intrusion detection are often provided by reputable data centers or cloud providers, this manageable service can add security measures for managed servers.
4For reference from other customers.
If you have any questions, ask the opinions of other cloud suppliers, especially those who require strict security measures. For example, you may want to ask the opinions of insurance companies. Although the opinions of others cannot be guaranteed, if other companies with the same supplier and your company have similar security goals, this reference will be very helpful. Be sure to contact these customers as far as possible to see what these companies are doing using cloud services and what security measures they have taken.
5, Repeated tests
Do not assume what is safe. The only way to secure cloud data is to test. For companies with highly sensitive data, it is important to hire a skilled hacker to test their security status. Vulnerability Scanning and evaluation are critical both in the cloud and outside the cloud. Note: If you can find a way to access data without authorization, others can also

6Encryption of static, in-use, and transmitted data
Encryption is considered to be the best method for any enterprise that attaches importance to security awareness. Its cost-effectiveness is very attractive for cloud computing enterprises. Enterprises use the correct encryption techniques to make data safer and get twice the result with half the effort.
When data is stored in the cloud, Virtual Disks, databases in the cloud, or object storage, it is easy to be exposed. During data transmission, for example, when the data is transmitted from a user's browser to a cloud server or between ECs instances, eavesdropping may occur. A truly hateful hacker may even access the root account of the ECS and view the server's memory when using data and computing. Enterprises should be aware of these possibilities and choose solutions that can address these risks.
7Define security responsibilities
Many regulations or specifications (such as pci dss) require data encryption on multiple points. This means that encryption is not a problem of other people (customers, suppliers, equipment vendors, etc.), but of enterprises. In terms of data security, you do not have to rely too much on external power. You must learn to do it yourself ".
According to the investigation, many companies do not even know that their ECs instances have been attacked by hackers. In terms of cloud encryption, enterprises must take responsibility. The key is to define which teams should be responsible for data security, and what responsibilities should be taken after the security losses caused by mistakes.
8Check various cloud encryption options and select the most robust solution
Correct encryption is not easy. The best choice is to use the solution recommended by experts. Enterprises should check the encryption schemes available for cloud services. The selection of private or public clouds plays an important role in the selection of cloud encryption solutions. Enterprises should ensure the use of the most robust encryption standards and conduct regular checks.
9Prepare for encryption in the worst case
To prevent external hackers from accessing enterprise data, you may have strengthened the server. But what should we do for internal employees?
Enterprises should prepare for the worst case. For data that has been implemented with strong encryption, enterprises should only allow access by persons with work needs, and train these employees to access encrypted data from where they can access it, and require them to follow the security rules.
Do not forget to encrypt backups and snapshots. Encryption is especially important for maintaining multiple data copies and backups.
10, Protect keys
Delivering the key to a security vendor or cloud provider is to provide the target to the attacker. Enterprises should use the most robust encryption key technology, like state key management, to enhance key security. The homomorphic key provides two keys, in which the encryption master key is handed over to the application or data itself, which can still be encrypted when the application and data are used. Even if the encrypted master key is stolen, illegal users cannot access the data.
Data Encryption is not the only method to protect cloud data security. enterprises still need to strengthen other aspects. For example, the use of BYOD may bring new security problems to network and enterprise data. In fact, you can prevent unauthorized access by storing data in the cloud instead of on the employee's device. Combining cloud storage, data encryption, and website security means can help enterprises defend against network threats and build a strong security front.