The Dangers of Default Passwords: Why Changing Default Settings is Crucial.

  • MARCH 19TH, 2025
  • 2min read
The Dangers of Default Passwords: Why Changing Default Settings is Crucial.

Introduction

Default passwords are standard, known userid/password pairs that are preinstalled into an
operating system, database or software intended for initial testing, installation, and
configuration operations, and it is best practice to change the default password before deploying
the system in a production environment. This is because default passwords are easily exploited
by attackers as they can be easily obtained in product documentation and compiled lists
available on the internet.

In 2024, The SolarWinds Web Help Desk (WHD) software was affected
by a hardcoded credential

vulnerability

Affected Products

Here is a list of systems, devices or products that commonly use default passwords:

  • Routers, access points, switches, firewalls, and other network equipment.
  • Databases and management systems, including IDMS, Oracle, and Microsoft SQL.
  • Web applications and Administrative web interface.
  • Industrial Control Systems (ICS) systems.
  • Other embedded systems and devices
  • Remote terminal interfaces like Telnet and SSH

Best Practices

  • Change Password:
    Change default passwords before deploying the system on a
    network with internet access. Use a sufficiently strong and unique password.
  • Apply Updates:
    Turn on automatic updates for your programs and devices to ensure
    the latest security patches are applied.
  • Restrict Network Access:(MFA):
    Restrict network access to trusted hosts and networks and
    only allow internet access to required network services.
  • Scan and Monitor:
    Scan your environment regularly to ensure no systems on your
    network are using default passwords.
  • Authentication Mechanisms:
    Wherever possible, add an extra layer of security using
    authentication mechanisms like Multifactor authentication, Kerberos, x.509
    certificates, public keys, etc.

By adhering to these best practices of default passwords, organisations can reduce the risk
of unauthorised access and data breaches.

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The Dangers of Default Passwords: Why Changing Default Settings is Crucial.

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