In recent years, network security problems have emerged one after another, such as information leakage, phishing, and hacker attacks.
Despite evidence of multibillion-dollar cybersecurity breaches in some of the world's most prominent corporate organizations, businesses still aren't taking cybersecurity seriously. Large corporations are finding all kinds of reasons to reduce their cybersecurity budgets, cutting costs instead of investing in their infrastructure. And many small businesses simply ignore the threats posed by network security.
Causes of network security problems in enterprises
1. Unable to continuously update the system
No matter how skilled the developer is, there is no good software coding. There will be security holes and long-term integrity issues anyway. If these vulnerabilities are discovered, they may exploit this vulnerability to launch an attack.
Fortunately, most development teams and open source communities are constantly on the lookout for potential threats, and when they discover new ones, they fix them with patches.
2. Not paying enough attention to network security issues
One of the bigger problems here is that corporate executives aren't taking cybersecurity seriously, or at least not paying enough attention to it. For large companies, this is the result of a combination of factors. For example, they may have spent a lot of money on IT teams and network security tools, but they may not have a measure of whether these investments are sufficient, and it is difficult to see the results of their investments. After all, if your network security policy is effective, you won't be the target of a major attack or hack.
When it comes to small businesses, although they are one of the most common targets of cybercriminals, the prevailing attitude is that "we are too small to be targeted by hackers".
Small businesses are reluctant to pay for even the most basic cybersecurity options.
In any case, if a business doesn't take cybersecurity seriously, they won't be doing much security to protect themselves.
3. Failure to take basic network security measures
For cybersecurity to be effective, it needs to be proactive. Businesses need to work long before they suffer a data breach or hack; if you wait until you're sure you'll be a victim, it's too late.
4. Neglecting the security of employees’ work mailboxes
Nowadays, many enterprise employees use corporate mailboxes for work communication and external business work, but in the increasingly complex Internet world, this method can easily lead to business secrets and personal privacy in emails being peeped and modified by hackers or Trojan horse programs. Affect the interests of users themselves.
Attackers usually use emails to spread malicious website URLs, cheat users' trust by forging the sender's identity, and induce users to click on malicious website URLs, thereby stealing user credentials or downloading malicious code. To prevent malicious website links delivered by email, it is necessary to verify the identity of the sender to ensure that the source of the email is credible, and to detect the source of malicious website URLs.
Usually web-based email sending and receiving cannot realize email signature and verification. MeSince email client is an email client software based on the S/MIME international standard. It automatically configures MeSince email encryption certificate and identity authentication certificate, and supports encryption of each email. It protects email content with full encryption to prevent content tampering and embedding; supports digital signature for each email, verifies the real identity of the email sender, and prevents identity counterfeiting and phishing emails; MeSign email client also uses 360 cloud scanning and killing technology, Detect fake and fraudulent websites.
5. Hope for a single security solution
There are security products and services that can minimize security breaches, including firewalls, antivirus software, and virtual private networks. But most business executives pin all their hopes on a single solution. Many people think that as long as a firewall is used, they will not suffer from network security attacks.
However, complete data protection requires enterprises to pay close attention to multiple potential threats and adopt effective solutions to prevent them according to the situation. Using just one or two techniques can open a business to other attacks.
6. No safety training for employees
One of the most common reasons small businesses experience cyberattacks is simple employee error. Many cybercriminals are not carried out by sophisticated hackers, but rather opportunists, who will seek out and exploit wrongdoings created by employee ignorance. For example, they might be trying to trick employees into giving up their login credentials, or they might just be getting to know the business through a social app.
Employees tend to have a lot of information, and the more trained employees are on cybersecurity practices, the fewer security breaches a business will face. However, many companies ignore this point. There are many reasons for enterprises to have network security problems, and the current network security problems are becoming more and more serious. Some problems are difficult for us to solve, but many network security problems can be prevented before they happen. As an enterprise operator, improving the comprehensive network security protection system and strengthening the popularization of internal network security related knowledge can minimize the threats and hidden dangers caused by security issues.
From the above reasons, we can find that a large part of the reason why enterprises encounter network security is because they do not understand and do not pay attention to network security. Therefore, if you want to solve network security problems, you need to solve them fundamentally, understand and learn network security related knowledge , is imperative.
Cyber Security Learning Path
The first stage: getting started with basic operations and learning basic knowledge
The first step to getting started is to learn some current mainstream security tool courses and supporting books on basic principles. Generally speaking, this process takes about 1 month.
At this stage, you already have a basic understanding of cybersecurity. If you have finished the first step, I believe you have theoretically understood the above is sql injection, what is xss attack, and you have also mastered the basic operations of security tools such as burp, msf, and cs. The most important thing at this time is to start laying the foundation!
The so-called "foundation" is actually a systematic study of basic computer knowledge. If you want to learn network security well, you must first have 5 basic knowledge modules:
1. Operating system
2. Protocol/Network
3. Database
4. Development language
5. Principles of Common Vulnerabilities
What is the use of learning these basics?
The level of knowledge in various fields of computer determines the upper limit of your penetration level.
[1] For example: if you have a high level of programming, you will be better than others in code auditing, and the exploit tools you write will be easier to use than others;
[2] For example: if you have a high level of database knowledge, then when you are conducting SQL injection attacks, you can write more and better SQL injection statements, which can bypass WAF that others cannot bypass;
【3】For example: if your network level is high, then you can understand the network structure of the target more easily than others when you infiltrate the internal network. You can get a network topology to know where you are, and get the configuration of a router. file, you will know what routes they have made;
【4】For another example, if your operating system is good, your privilege will be enhanced, your information collection efficiency will be higher, and you can efficiently filter out the information you want.
The second stage: practical operation
1. Mining SRC
The purpose of digging SRC is mainly to put the skills into practice. The biggest illusion of learning network security is to feel that you know everything, but when it comes to digging holes, you can’t do anything. SRC is a very good opportunity to apply skills.
2. Learn from technical sharing posts (vulnerability mining type)
Watch and study all the 0day mining posts in the past ten years, and then build an environment to reproduce the loopholes, think and learn the author's digging thinking, and cultivate your own penetrating thinking
3. Range practice
Build a shooting range by yourself or go to a free shooting range website to practice. If you have the conditions, you can buy it or apply to a reliable training institution. Generally, there are supporting shooting range exercises.
Phase 3: Participate in CTF competitions or HVV operations
Recommended: CTF Competition
CTF has three points:
【1】A chance close to actual combat. Now the network security law is very strict, unlike before, everyone can mess around
[2] Topics keep up with the frontiers of technology, but many books lag behind
【3】If you are a college student, it will be very helpful for finding a job in the future
If you want to play a CTF competition, go directly to the competition questions, if you don’t understand the competition questions, go to the information according to what you don’t understand
Recommended: HVV (network protection)
HVV has four points:
[1] It can also greatly exercise you and improve your own skills. It is best to participate in the HVV action held every year
【2】Be able to meet many bigwigs in the circle and expand your network
【3】The salary of HVV is also very high, so you can earn a lot of money if you participate
[4] Like the CTF competition, if you are a college student, it will also be very helpful for finding a job in the future
Fourth, the recommendation of learning materials
Book list recommendation:
Computer operating system:
[1] Coding: the language hidden behind computer software and hardware
【2】In-depth understanding of the operating system
【3】In-depth understanding of windows operating system
【4】Linux kernel and implementation
Programming development class:
【1】windows programming
【2】windwos core becomes
【3】Linux programming
【4】Unix environment advanced into
【5】IOS becomes
[6] The first line of code Android
【7】C programming language design
【8】C primer plus
[9] C and pointers
[10] C expert programming
[11] C traps and defects
[12] Assembly language (Wang Shuang)
【13】java core technology
【14】java programming ideas
【15】Python core programming
[16] Linux shell script strategy
[17] Introduction to Algorithms
[18] Compilation principle
[19] Compilation and decompilation technology practice
[20] The way to clean code
[21] Code Encyclopedia
[22] TCP/IP Detailed Explanation
【23】Rootkit: Lurkers in the gray area of the system
【24】Hacking Attack and Defense Technology Collection
【25】Encryption and decryption
【26】C++ Disassembly and Reverse Analysis Technique Revealed
[27] web security testing
【28】White hat talks about web security
【29】Proficient in script hacking
【30】Web front-end hacking technology secret
[31] Programmer's application
【32】English Writing Handbook: Elements of Style
Common Internet Security and Forums
Kanxue Forum
Safety Class
Safety Niu
Safety Internal Reference
Green League
Prophet Community
XCTF Alliance
I have also compiled some network security information for you below. If you don’t want to find them one by one, you can refer to these information.
video tutorial
SRC&Hacking Technical Documentation
Hacking Tools Collection