How To Prevent Information Theft With 10 Simple Tips

Written by: Lizzie Danielson

Published: 6/9/2026

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Most people think threat actors use complex code to steal files. More often, cybercriminals use stolen passwords found online to hack into your system. Once they’re in one account, they look for new vulnerabilities to exploit like misconfigured firewalls or unpatched software. If there’s sensitive information, they’ll find it.

Knowing how to prevent information theft before it happens is far better than catching hackers after the fact. But do you start with identities or endpoints? And what about privilege accounts?

In this guide, we’ll explain how to protect your system so that a small vulnerability doesn’t turn into a massive data breach.

Key Takeaways

Many modern data theft incidents begin with compromised credentials—stolen, phished, or reused passwords—rather than exotic exploits or zero-day malware.
Traditional tools can miss unauthorized access when hackers use valid login credentials to pass for actual employees.
Constant monitoring and early detection are hard to sustain with a small team, especially as identity signals grow noisy, so many organizations rely on a Managed ITDR provider to watch their identities and email environments 24/7.

What information theft means in cybersecurity

Information theft happens when someone gets into your systems and steals data they shouldn’t have access to. Usually, these criminals aren’t after just one file. They’re grabbing passwords, account numbers, and trade secrets to ransom back to you or sell on the dark web.

The process starts with a threat actor stealing a user’s login credentials. After getting their foot in the door, they move through your network and take whatever they want. Cyberattacks and theft happen fast and take a while to detect—your goal is to stop them from entering your system in the first place.

Common ways attackers steal information

Threat actors use many ways to break into your system, but they generally stick to some tried-and-true methods:

Phishing and social engineering: Social engineering is behind 98% of cyber attacks. Attackers send an email or SMS that looks like it comes from leadership or a trusted vendor. The goal is to trick the victim into handing over passwords or clicking a link that installs malware.
Credential theft: Some threat actors buy lists of account logins on the dark web or use software to guess strong passwords. Once they have the right combinations, they slip right past your security team and steal valuable data.
Insider threats: Hiring new employees who then steal data or sabotage the company makes up 32% of cyberattacks. Some tech companies have unwillingly hired spies from other countries. Once onboarded, they steal and sell sensitive business information.
Unsecured endpoints: Every laptop or phone connected to your network is a potential door. If someone logs into a device without a virtual private network (VPN), their connection isn’t encrypted. This opens up space for an attacker to squeeze in and snag data.
Weak access controls: A data breach spreads easier if everyone in the company has access to every file. Just by using a worker’s stolen login information, attackers gain access to look for information like financial records.

Why identity attacks often lead to data theft

When an attacker steals account information, they get the key to your internal systems. From inside your environment, they can move around undetected as they find and steal sensitive information.

Below are a couple of common ways this happens.

Account takeover (ATO) & credential abuse

With ATO, threat actors don’t need to look for bugs or unpatched software. Instead, you need to detect the earliest signs that a stolen identity is being used—suspicious logins, unusual inbox rules, or anomalous access patterns—before attackers can move deeper into your environment. By the time you notice the suspicious login, they’ve already stolen the data they were after.

Excessive privileges & unauthorized access

If all employees have clearance for every folder, hackers don’t need to sift through accounts to find ones with special access. In fact, one compromised account can cause a lot of issues for the whole business. These wide-open permissions make it easy to grab sensitive data users didn’t need access to in the first place.

10 practical ways to prevent information theft

Good security hygiene involves a series of steps to stop hackers at every level and turn. The goal of identity-based attack prevention is to make your environment difficult to navigate without true, authorized access.

Use strong password & password managers
Did you know that 78% of people reuse their passwords across platforms and accounts? It’s the easiest way to keep up with digital security checkpoints and requests to change passwords. But that convenience comes with a privacy cost. Instead, use authorized password managers to securely store unique passwords for each service you need to sign into.
Enable multi-factor authentication (MFA)
Think of MFA as your backup plan if the attacker finds the login credentials anyway. They still can’t get in unless they use the second step of the process, which could range from biometrics to physical keys. Setting up your MFA isn’t foolproof, but it’s still one of the best ways to secure accounts.
Limit access using the principle of least privilege
Limiting access slows the spread of theft once a hacker gets in. You wouldn’t hand guests a key to every room in your building, so treat your tech infrastructure with the same discretion. Give employees, vendors, and other users only enough access needed to do their daily tasks.
Monitor login activity for suspicious behavior
Stay aware of who’s logging in and where. It’s possible to see a login alert outside office hours for a country where staff isn’t located. While this may be a remote worker traveling, it could also be a threat actor overseas trying to sneak in. Set up travel policies for remote and hybrid workers to prevent expensive data breaches. This could include options like mandatory VPN use or on-going security awareness training.
Keep devices & software updated
Threat actors love using old software bugs to sneak in. Running a regular update patches these holes so they lead to nowhere, even if threat actors manage to find them. Not only do these updates protect your company data, they also keep your programs and software running smoothly.
Secure networks & remote access
Free, unsecured Wi-Fi at your local cafe is a great place for data interception and theft. If employees have access to payroll data, health records, and financial information, they’re a prime target for a cyberattack. Make sure remote workers use a properly secure network and a VPN to create a secure access tunnel for your data.
Encrypt sensitive data
Encryption adds a final layer of protection to your important assets by turning readable data into scrambled nonsense. Only those with the right digital key can decode an encryption. Even if an adversary did manage to steal the file, they wouldn’t be able to read the personal information encoded inside.
Train employees to recognize phishing attacks
Cyberattacks can come from fake emails, invoices, or even phone calls. Since 74% of Chief Information Security Officers (CISOs) rank human error as their top security risk, companies need to train their employees on better pattern recognition. Offer classes on how to accurately recognize, respond to, and report these issues to keep your team informed.
Monitor & audit access to sensitive data
To see who looks at your most important files, keep a log of user activity. Look at this data regularly to spot fishy activity or any excessive and abused access. This reactive monitoring allows your team to respond quickly to external attacks.
Detect identity threats before unauthorized access
Spotting a threat after it’s happened is a losing strategy. Instead, you need to pinpoint the moment an attacker tries to use a stolen identity. To catch identity based attacks early, pair an AI-assisted detection engine with a 24/7 SOC that reviews and validates alerts before taking action.

Why traditional defenses miss identity-based data theft

Most security and data protection tools look for suspicious files and malicious code. Unfortunately, they aren't usually designed to question user identity and access privileges.

Empower your team with security awareness training to help them learn how to spot these early red flags of identity theft.

Attackers often use valid credentials

When thieves use stolen logins, it sometimes doesn't trigger standard alarms. If the activity looks like an authorized employee, an attacker can browse through sensitive information without a firewall getting in the way.

Monitoring identity behavior improves detection

Knowing how an account normally behaves gives you insight into when something isn’t quite right. Keep an eye out for users suddenly logging in from a new device or trying to view old bank statements. These are early warning signals of an attack underway.

How identity threat detection helps stop data theft earlier

To prevent identity theft in cyber security, IT admins need to watch how people use their accounts. Tracking authentication events and behavior makes it easier to spot a compromised account long before a thief gets to your files.

Huntress Managed ITDR continuously monitors Microsoft 365 and Google Workspace identities and email environments for suspicious logins, inbox rules, and other identity signals that often precede data theft. Our expert SOC analysts combine AI tools with years of professional experience to look for and stop suspicious behavior.

Secure your data & prevent theft with Huntress

Locking down devices and networks is only half the battle. You need continuous visibility into identity activity in Microsoft 365 and Google Workspace to catch credential abuse. Managed ITDR offloads that 24/7 identity monitoring and response to a SOC that specializes in account takeovers, BEC, and credential misuse.

With Huntress, outsourcing your ITDR solutions takes some of this pressure off. When Huntress confirms a compromised identity, our SOC analysts can disable affected accounts, revoke active sessions, remove malicious inbox rules, and provide clear remediation steps so you can safely restore access and reset credentials. Find out how our identity threat detection and response team can serve your business today.

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