What Is Hardening?

In IT, hardening helps limit the threat of attack by turning off non-essential services and patching vulnerabilities. It essentially locks down a system, making it harder for attackers to breach security by removing anything other than the basic configurations necessary to run.

professional certificate

IBM Cybersecurity Analyst

Launch your career as a cybersecurity analyst . Build job-ready skills for an in-demand role in the field, no degree or prior experience required.

4.7

(12,998 ratings)

237,698 already enrolled

Beginner level

Learn More

Average time: 4 month(s)

Learn at your own pace

Skills you'll build:

Cybersecurity Compliance, Database Queries, Digital Forensics, Network Security, Penetration Testing, Cybersecurity Case Study Analysis, Incident Response, Cybersecurity Controls, Physical Threats and Controls, Cybersecurity Threats, Laws and Regulations, Risk Management, Cybersecurity Standards, Cybersecurity Framework, Linux, Windows, MacOS, User Accounts, Virtualization, User (Computing), Operating Systems, Directory and File Management, Certification exam practice, CompTIA CySA, CompTIA Security+, Cybersecurity, Cyber Threat Intelligence, Cryptography, Cyber Threat Hunting, Penetration Test, Generative AI, Artificial Intelligence (AI), Incident management, Security Information and Event Management (SIEM), Vulnerability Management, Application Security, Information Security (INFOSEC), Cyberattacks, Cybersecurity Incident Management, Security Analysis and Reporting, Digital Evidence Handling, Resume, Interviewing Skills, Job Search Strategies, Cybersecurity Careers, job interviews, Digital Network Architecture, Data Security, Intrusion Detection Systems, Network Configuration, Endpoint Security, Firewall Configuration, Password policies, User profiles, Database Security, Database injection vulnerabilities, Database auditing models, CompTIA Certifications, ISC2 certifications

Threats to consider

Hardening typically minimizes the risks of misconfigurations and operational problems. It also simplifies the compliance process and helps guard against security issues. When looking at the hardening process, it’s essential to consider all possible security threats to know what you’re protecting against and how best to do it. These include the following:

• Malware distribution

• Identity theft

• Sabotaging processes

• Manipulating applications

• Data leakage through hacking

What does hardening mean in software development?

During the software development life cycle (SDLC), hardening refers to applying security strategies while creating new software to reduce avenues for an attack. Coding languages can be susceptible to vulnerabilities, so software developers must thoroughly understand this to ensure the new application is secure. Establishing a secure software development policy can help your organization with this issue.

Hardening examples

To protect against these threats and others, you can choose from a number of hardening options, depending on your organization. Hardening can never be 100 percent attack-proof, but you can look for various industry benchmarks. Several different types of hardening exist, including:

• Server

• Software application

• Operating system

• Database

• Network hardening

Some hardening measures include these:

Automating updates: Software and hardware updates and patches are necessary for all businesses. Automating them eliminates any human error resulting in a delay in updates, meaning at no time will your system or network remain unprotected. 

Scanning regularly: To increase security, monitor and scan systems regularly for any vulnerabilities, weaknesses, or viruses. You can also automate this process.

Training staff: It is effective to train all staff members on security threats and how to protect systems from attacks. This might include how to look out for phishing and how to transfer data safely.

Managing passwords: A weak password can mean the infiltration of a whole system or network, so it is essential that all users reset their passwords if the company suspects a breach of security. The users should also utilize processes like password rotation.

Documenting processes: Being aware of what’s going on is vital, so documenting a threat or unusual occurrence means that others know if it has happened before when they encounter it. This helps with troubleshooting and identifying threats.

Related terms

• Cybersecurity careers

• Cybersecurity 

• Computer information systems

• IT management

Learn more about hardening on Coursera

Take the next step toward a career in cybersecurity by enrolling in the Google Cybersecurity Professional Certificate on Coursera, where you can learn about network security, cloud computing, and Python programming. This Professional Certificate is your gateway to exploring job titles like SOC (security operations center) analyst and more. Upon completion, you’ll have exclusive access to a job platform with over 150 employees hiring for entry-level cybersecurity roles and other resources supporting your job search.

professional certificate

Google Cybersecurity

Get on the fast track to a career in cybersecurity. In this certificate program, you'll learn in-demand skills, and get AI training from Google experts. Learn at your own pace, no degree or experience required.

4.8

(41,710 ratings)

896,172 already enrolled

Beginner level

Learn More

Average time: 6 month(s)

Learn at your own pace

Skills you'll build:

Network Security, Security Information and Event Management (SIEM) tools, Linux, Cloud Computing, Intrusion Detection Systems (IDS), Python Programming, SQL, Packet Analyzer, Cloud Networks, Transmission Control Protocol / Internet Protocol (TCP/IP), Network Architecture, Security Hardening, resume and portfolio preparation, escalation, Job preparedness, stakeholder communication, integrity and discretion, NIST Cybersecurity Framework (CSF), Information Security (INFOSEC), Cybersecurity, Historical Attacks, Ethics in cybersecurity, PEP 8 style guide, Coding, Computer Programming, Incident Response Playbooks, Security Audits, NIST Risk Management Framework (RMF), threat analysis, Cryptography, vulnerability assessment, asset classification, Authentication, Command line interface (CLI), Bash