Total Defense

Security Glossary

Search our glossary to learn more about online security and anti-virus terms.

Security Glossary

Internet security is a very broad term that describes protecting private information exchanged over the Internet, but there are numerous terms under its umbrella that anyone who uses the Internet should know about. Words like malware, phishing or encryption can sound like a foreign language to some, but they’re important terms when it comes to internet safety. Total Defense is dedicated to protecting your devices against harmful threats with our online security software, and part of that is introducing the terms associated with these threats so you’re always one step ahead.

Anti-Virus Software

Antivirus software, or anti-virus software (abbreviated to AV software), also known as anti-malware software, is a computer program employed to prevent, detect, and remove malware from devices. Antivirus software was originally developed to detect and remove computer viruses, hence the name. However, with the proliferation of other kinds of malware, high quality antivirus software has started to provide protection from many other kinds of emerging computer threats.


A type of software that downloads or displays unwanted ads when a user is online or redirects search requests to certain advertising websites.


The procedure of confirming the identity of a user or device in order to give access to a system or network. The authentication process is used to validate that the information a user provides is true. This process is a large part of the digital age to maintain privacy on potentially vulnerable networks.


Method that a third party uses to bypass security systems, such as authentication or encryption. Hackers will install malware to gain access to private data within a program or computer system


Blockchain was created to keep track or support Bitcoin cryptocurrency. It’s the technology that keeps record of transactions made in cryptocurrency processes. Blockchain is a decentralized, public digital ledger that is used to manage the cryptocurrency database


Networks of computers infected by malware and controlled remotely by cybercriminals, usually for financial gain or to launch attacks on websites or networks. Many botnets are designed to harvest data, such as passwords, Social Security numbers, credit card numbers, and other personal information.


Breach refers to a security incident in which confidential information is compromised by an unauthorized individual or network. Data or security breaches occur when a third party accesses any private information illegally.


An application used to access and navigate the web. The browser is the vehicle used to locate web pages. Commonly used browsers include Internet Explorer, Chrome and Mozilla Firefox.


A large network of information stored on the internet instead of a computer hard drive. Cloud computing simply refers to pay-for-use storing and sharing data over the internet as opposed to outdated methods such as CDs or flash drives.


When you browse the Internet, information about your computer may be collected and stored. This information might be general information about your computer (such as IP address, the domain you used to connect (e.g., .edu, .com, .net), and the type of browser you used). It might also be more specific information about your browsing habits (such as the last time you visited a particular web site or your personal preferences for viewing that site).


Unlike other currencies, cryptocurrency operates independently of a central bank and uses encryption techniques and blockchain technology to secure and verify transactions.


Cryptojacking occurs when malicious cyber actors exploit vulnerabilities—in webpages, software, and operating systems—to illicitly install cryptomining software on victim devices and systems. With the cryptomining software installed, the malicious cyber actors effectively hijack the processing power of the victim devices and systems to earn cryptocurrency. Additionally, malicious cyber actors may infect a website with cryptomining JavaScript code, which leverages a visitor’s processing power via their browser to mine cryptocurrency


Cryptocurrency mining, or cryptomining, is simply the way in which cryptocurrency is earned. Individuals mine cryptocurrency by using cryptomining software to solve complex mathematical problems involved in validating transactions. Each solved equation verifies a transaction and earns a reward paid out in the cryptocurrency. Solving cryptographic calculations to mine cryptocurrency requires a massive amount of processing power.


A cyberattack is any type of offensive maneuver employed by nation-states, individuals, groups, society or organizations that targets computer information systems, infrastructures, computer networks, and/or personal computer devices by various means of malicious acts usually originating from an anonymous source that either steals, alters, or destroys a specified target by hacking into a susceptible system.


Cyberbullying refers to practice of using technology to harass, or bully, someone else. Bullies used to be restricted to methods such as physical intimidation, postal mail, or the telephone. Now, developments in electronic media offer forums such as email, instant messaging, web pages, and digital photos to add to the arsenal. Computers, cell phones, and PDAs are current tools that are being used to conduct an old practice. Forms of cyberbullying can range in severity from cruel or embarrassing rumors to threats, harassment, or stalking. It can affect any age group; however, teenagers and young adults are common victims, and cyberbullying is a growing problem in schools.


Cybercrimes are crimes committed by way of computers or the internet. Cybercriminals are commonly referred to as hackers. Cybercrime is criminal activity involving identity theft, phishing, cyberstalking, or any illegal action taken to either target computer networks or use computer networks as a means to carry out the crime.


It seems that everything relies on computers and the internet now—communication (e.g., email, smartphones), entertainment (e.g., digital cable, mp3s), transportation (e.g., car engine systems, airplane navigation), shopping (e.g., online shopping, credit cards), medicine (e.g., medical equipment, medical records), and the list goes on. How much of your daily life relies on computers? How much of your personal information is stored either on your own computer or on someone else’s system? Cybersecurity involves protecting that information by preventing, detecting, and responding to cyber attacks.

Data Breach

Breach of secured information or private information that was accessed without authorization. Cybercriminals have been known to target large organizations in order to infiltrate network security, uncovering a mass amount of consumers’ sensitive information.

Digital Asset Protection

Simply put, digital asset protection is the system of protecting one’s digital assets. Digital assets can include any form of digitally stored content, such as photos, emails, audio files, word processing documents, online financial services, cryptocurrency and more. Software to protect your digital assets is a must in our modern digital world.

Digital Threats

A cybersecurity or computer security threat to a computer system or network. The possibility of disrupting a computer network by infiltrating and tampering with personal data. Threats may or not come to fruition, but they are one of the many dangers of the digital age.


Domains are defined by their IP addresses. A domain is a central security database that is made up of a group of computers or devices that share the same domain. Domain Name Servers (DNS) are simply a directory that your device uses to translate into IP addresses, or web pages.


A denial-of-service (DoS) attack occurs when legitimate users are unable to access information systems, devices, or other network resources due to the actions of a malicious cyber threat actor. Services affected may include email, websites, online accounts (e.g., banking), or other services that rely on the affected computer or network. A denial-of-service is accomplished by flooding the targeted host or network with traffic until the target cannot respond or simply crashes, preventing access for legitimate users. DoS attacks can cost an organization both time and money while their resources and services are inaccessible.


In basic terms, encryption is a way to send a message in code. The only person who can decode the message is the person with the correct key; to anyone else, the message looks like a random series of letters, numbers, and characters. Encryption is especially important if you are trying to send sensitive information that other people should not be able to access. Because email messages are sent over the Internet and might be intercepted by an attacker, it’s important to add an additional layer of security to sensitive information.


Malware, short for “malicious software,” includes any software (such as a virus, Trojan, or spyware) that is installed on your computer or mobile device. The software is then used, usually covertly, to compromise the integrity of your device. Most commonly, malware is designed to give attackers access to your infected computer. That access may allow others to monitor and control your online activity or steal your personal information or other sensitive data.


Phishing is a form of social engineering. Phishing attacks use email or malicious websites to solicit personal information by posing as a trustworthy organization. For example, an attacker may send email seemingly from a reputable credit card company or financial institution that requests account information, often suggesting that there is a problem. When users respond with the requested information, attackers can use it to gain access to the accounts.


Ransomware is a type of malware that infects a computer and restricts access to it until a ransom is paid by the user to unlock it. Even when a victim pays the ransom amount, the stolen files could remain locked or be deleted by the cybercriminal.


Rootkit is a type of malware that opens a permanent “back door” into a computer system. Once installed, a rootkit will allow additional viruses to infect a computer as various hackers find the vulnerable computer exposed and compromise it.


Spyware is a type of malware that quietly gathers a user’s sensitive information (including browsing and computing habits) and reports it to unauthorized third parties.


A Trojan is a type of malware that disguises itself as a normal file to trick a user into downloading it in order to gain unauthorized access to a computer.

Two-Factor Authentication

Two-factor authentication is a method of confirming users’ claimed identities by using a combination of two different factors: 1) something they know, 2) something they have, or 3) something they are. A good example of two-factor authentication is being frequently used on Every fresh login would ask for the password & a system generated one-time password sent on the registered mobile number or email-id.


Virus is a program that spreads by first infecting files or the system areas of a computer or network router’s hard drive and then making copies of itself. Some viruses are harmless, others may damage data files, and some may destroy files entirely.


A worm is a type of malware that replicates itself over and over within a computer. Most cybercrime starts with malware. Cybercriminals use it to access your computer or mobile device to steal your personal information like your Social Security number, passwords, credit card information, or bank account information, to commit fraud. Once cybercriminals have your personal information, they use the data for illegal purposes, such as identity theft, credit card fraud, spamming, and spreading malware to other machines.

Zero-day Attack

A zero-day (also known as 0-day) vulnerability is a computer-software vulnerability that is unknown to those who would be interested in mitigating the vulnerability (including the vendor of the target software). Until the vulnerability is mitigated, hackers can exploit it to adversely affect computer programs, data, additional computers or a network. An exploit directed at a zero-day is called a zero-day exploit, or zero-day attack. Even after a fix is developed, the fewer the days since Day Zero, the higher is the probability that an attack against the afflicted software will be successful, because not every user of that software will have applied the fix. Zero-day attacks are a severe threat.


Introducing our new updated internet security product line. More secure and easier to use than ever.

We’ve Got You Covered

Surf with confidence – simple, smart, and reliable protection from viruses, spyware, ransomware and malware.

Total Defense
is total peace of mind.

Detect and remove any threat, without negative impact on your speed and performance.

Secure Your World

Total Defense

Internet Security and Safety Center

Helpful tips and articles with practical steps you can follow to improve your online safety
Online Safety

Total Defense Security Tip of the Day


Cyberbully harassment - document the activity

Keep a record of any online activity (emails, web pages, instant messages, etc.), including relevant dates and times. In addition to archiving an electronic version, consider printing a copy to have a record if you report the activity to local law enforcement.

Improved cybersecurity a 2019 resolution you can actually keep

Did you make a New Year’s resolution or 2019? While many people set ambitious goals each January – from losing weight to reading more books – most don’t even come close to reaching them. According to U.S. News, 80 percent of people have abandoned their resolutions by the second week of February. The reasons for […] Read More»