Written by Michael Feder
Reviewed byKathryn Uhles, MIS, MSP,Dean, College of Business and IT
Ethical hacking means receiving explicit permission to attempt to bypass a company’s networks through penetration testing, SQL injection and other means. The goal is to identify vulnerabilities or weaknesses in company systems as well as ways to better defend their servers, devices and data from cyberattacks.
Ethical hacking is a valuable first step for any company looking for insight into their network security. It helps satisfy several core cybersecurity priorities, from network defense to regulation compliance. Many companies depend on regular cybersecurity tests to audit their own information security strategies.
Many companies depend on ethical hackers to secure their networks. A professional certification known as(CEH) trains professionals in specific methods of keeping digital property safe from cyberattacks.
Organizations that conduct regular penetration testing of their in-house computer systems will be better protected from cybercriminals. They’ll achieve higher levels of security through regular tests on system networks that identify weaknesses and how to patch them. When security breaches do occur, companies trained in ethical hacking are also better prepared to respond.
Ethical hacking occurs when companies give IT professionals permission to attempt a cyberattack as a way to test the defenses of their computer network. By contrast, malicious hacking occurs without company permission — often without any company knowledge. While a CEH is motivated to improve a company’s cybersecurity measures, malicious hackers exploit vulnerabilities for personal gain or financial reward.
While ethical hackers use a variety of techniques, they usually refrain from certain network attacks that may cause harm. Instead, a CEH attempts to breach company networks while doing as little damage to the system or users as possible. For example, they do not typically useforms of malware that can permanently damage computersor internal data.
Malicious hackers do not follow these guidelines. They are content to damage a network’s infrastructurewhile extracting valuable information. This means they often use aggressive malware, ransomware, phishing schemes,andto work their way into secure systems.
Many different professionals conduct hacking. Despite their similar skill sets, they operate with varying philosophies. Some follow white hat protocols, using their skills to help companies identify and patch system vulnerabilities. Others maliciously attack networks to access and sell the information. Still others are considered “gray hat” — alternating between malicious and ethical hacking practices.
use their skills for good, helping companies identify and understand where their systems could use IT improvement. They operate strictly within the law and only exploit a company’s systems with explicit permission.
Certified ethical hackers and penetration testers are synonymous with white hat hackers. Though they’ll use techniques to execute data breaches — including penetration testing, vulnerability assessments and social engineering — they don’t seek personal gain from these actions. Instead, they work to help companies fortify their networks before malicious actors can get in.
deliberately operate outside of the law. They use unethical data exploitation techniques to illegally access a company’s networks, devices and data. Once inside a company’s network, they often take information hostage until a fee is paid. In other cases, they steal personal information and deliberately disrupt the network’s infrastructure.
Many black hat hackers operate in teams. They populate online forums or underground marketplaces, where they steal and sell personal data for high prices.
Sometimesoperate inside of the law, even sharing information on hacking techniques with companies looking to fortify network security. In other cases, they operate illegally — using illicit hacking practices or exploiting networks without permission.
Gray hat hacking blends white hat and black hat strategies. They maliciously hack systems, using newfound network access to explore data and applications. However, they may also focus on warning companies about security vulnerabilities.
Ethical hackers are critically important in protecting network safety. Particularly for companies with sensitive digital information, ethical hackers help identify and eliminate vulnerabilities before malicious hackers get the chance.
Collaboration is key — ethical hackers work directly with business and IT leaders, first diagnosing any problems with network structure or integrity. They perform various exploits — attempts to enter a network without legitimate passkeys.
After the active attack phase, they provide full reports to company stakeholders. These reports identify any successful exploits, along with opportunities for immediate and long-lasting network improvement.
It’s also important that company employees understand how to protect themselves against hacking. A CEH may often teach these skills, instructing employees on appropriate responses if they suspect malicious activity. This might include lessons or seminars on security best practices like and data backup.
Ethical hacking is a complicated, multistep process — one that involves recurring attempts to breach a network without proper access. Hackers use several common techniques to achieve their goals, including:
In some situations, a CEH may also depend on physical security techniques. These strategies help identify any vulnerabilities in physical security resources, like locks, security guards and video surveillance systems.
Most ethical hacking takes place in. Let’s break down each stage, and how hackers go about the process.
During the reconnaissance stage, hackers gather as much information and data as possible in a particular network. Hackers also spend timeauditing securityand identifying potential entry points to scan in the next step.
The information hackers gather depends on the network itself. For example, ethical hackers might come across details like IP addresses, email addresses, databases or webpage links.
Using information gathered during reconnaissance, ethical hackers directlyscan systems for weaknesses. This means focusing on specific areas of a network that might be particularly vulnerable to hacking attempts. It might also mean scanning specific applications connected to company networks that could serve as a viable point of entry.
Network mappingis a major priority during the scanning stage. This occurs when hackers map a network in terms of range, hosts and associated devices. This helps hackers achieve a much better understanding of a company’s network infrastructure, as well as the access permissions they might find inside.
Insight becomes action in this third stage, as ethical hackers attempt toexploit vulnerabilitiesthey’ve identified. They might use techniques in,or authentication bypass to gain unauthorized access to specific ports or files. Hackers might usesocial engineering techniquesif they identify weaknesses in a company’s workforce.
Once they gain access to a network, ethical hackers attempt to widen their scope of visibility. Where malicious hackers would begin to steal information or install malware, ethical hackers onlydocument their findings. They record specific steps that explain how they broke into the network.
After obtaining access to a network, ethical hackers work to maintain it. This stage mimics a malicious hacker’s attempts to hold a network open long enough to take control of the system. That process typically involvesrootkits and malicious softwarethat more easily enables unauthorized access to a particular system or network.
If an ethical hacker is actively working against a company’s IT team to hack a network, they oftenpractice persistence— techniques to reestablish network access after it is cut off. They might also simulate athat establishes consistent network access even if the original entry point is patched.
Many ethical hackers will further simulate a real-world attack by “covering their tracks” after the hack has concluded. This means hiding evidence that an attack took place. Hackers might modify registry values, revise log files or delete data that suggests illicit network entry.
A first step in hiding hack evidence is revising event logs. Event logs typically record major actions within a specific network, from user login times to file access. Malicious hackers may try to clear these logs toavoid raising suspicionwithin the organization they just hacked. Ethical hackers follow suit, attempting to erase this evidence before presenting a report to the hiring company.
Certified ethical hackers use a variety of tools to help save time when scanning networks, identifying vulnerabilities or performing actual exploits.
Here are some of the most popular resources:
Ethical hackers often use a combination of tools for a single hack, depending on their objectives. Together, these tools help accomplish all five stages of an ethical hack — from reconnaissance through network exit and reporting.
Ethical hackers face a unique set of challenges each day at work, particularly in staying up to date with techniques.
It’s their job tosimulate a malicious attack. To do so, they must stay updated on the latest malware, phishing and hacking trends. They also need to regularly update their tools and their ownskills in cybersecurityas hacking practices evolve.
An ethical hacker can alsoface challenges in maintaining compliance. Unlike other professionals, they attempt to emulate illegal activities. Even as they attempt to breach a company’s networks, they can only perform activities that follow legal guidelines.
Ethical hackersneed explicit permissionfrom a company before breaching their systems. Without that permission, hackers’ actions are considered malicious — subject to criminal charges under the.
They should followresponsible disclosure practices. This means fully revealing all security vulnerabilities after examining a company’s security. It also means allowing that companysufficient time to fix vulnerabilitiesbefore making information public.
There’s really no such thing as an entry-level ethical hacker. Many work toward becoming job-ready professionals by gaining experience in related information security and cloud computing roles.
For example, some cybersecurity analysts eventually grow into roles where they dopenetration tests and other vulnerability-management tasks. Experienced software developers may pursue ethical hacker roles after developing overlapping information technology skills in programming, web compliance and application architecture.
Becoming an ethical hacker involves a combination ofeducation and hands-on experience.
Many students begin their journey in the field of ethical hacking with acomputer science, cybersecurity ortechnology degree. These programs teach important skills in cybersecurity, IT, data science and related subjects.
Many pursue education incyber and network defenseto reinforce skills likenetwork analysis and risk management. You can further strengthen your knowledge with a certificate in digital forensics, learning even more about network traffic and threat reporting.
The U.S. Bureau of Labor Statistics (BLS) categorizes an ethical hacker as a type of. The average salary can vary based on several factors, like location, employer and years of experience. As of May 2023,information security analysts, with a median wage of$120,360, according to BLS*.
Here are some of the responsibilities of an ethical hacker:
The exact tasks of an ethical hacker depend on the employer’s needs. For example, some ethical hackers spend more time assessing networks for threats. Others serve more of an educational role in helping employees take personal responsibility for data and network safety.
*Salary ranges are not specific to students or graduates of ۴ý. Actual outcomes vary based on multiple factors, including prior work experience, geographic location and other factors specific to the individual. ۴ý does not guarantee employment, salary level or career advancement. BLS data is geographically based. Information for a specific state/city can be researched on the BLS website.
Whether you’re seeking a basic understanding of cybersecurity or you’re a working professional looking to expand your IT skill set, ۴ý (UOPX) offersonline course collections, bachelor’s degrees and master’s degrees.Learn more about undergraduate and graduateonline technology degrees and certificates from UOPXand start your IT journey today!
A graduate of Johns Hopkins University and its Writing Seminars program and winner of the Stephen A. Dixon Literary Prize, Michael Feder brings an eye for detail and a passion for research to every article he writes. His academic and professional background includes experience in marketing, content development, script writing and SEO. Today, he works as a multimedia specialist at ۴ý where he covers a variety of topics ranging from healthcare to IT.
Currently Dean of the College of Business and Information Technology,Kathryn Uhles has served ۴ý in a variety of roles since 2006. Prior to joining ۴ý, Kathryn taught fifth grade to underprivileged youth in ۴ý.
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