NIS2 and Secure Password Sharing — What Changes?

The Network and Information Security Directive 2 — NIS2 — came into force across the European Union in October 2024. It significantly expands both the scope of organisations subject to cybersecurity regulation and the stringency of the requirements they must meet. For many organisations, NIS2 represents the most consequential cybersecurity regulation they have faced — including requirements that directly affect how credentials are handled and shared.

This guide explains what NIS2 is, which organisations it affects, what it requires in terms of authentication and access management, and how credential sharing fits into your compliance posture. If you are new to the topic, the complete guide to secure password sharing covers the fundamentals this page builds on.

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What Is NIS2?

NIS2 is a European Union directive that replaced the original NIS Directive from 2016. The original directive established baseline cybersecurity requirements for operators of essential services and digital service providers. NIS2 dramatically expands the list of covered sectors, tightens the requirements, and introduces much stronger enforcement mechanisms.

Key changes from NIS1 to NIS2:

• Expanded scope: Sectors covered now include energy, transport, banking, health, water, digital infrastructure, public administration, space, postal and courier services, food, manufacturing, chemicals, research, and waste management — among others.
• Two-tier classification: Organisations are classified as "essential entities" or "important entities," with different levels of regulatory intensity for each.
• Management accountability: Board-level and senior management accountability for cybersecurity is now explicit. Leaders can be held personally liable for compliance failures.
• Stricter incident reporting: Significant incidents must be reported within 24 hours (early warning) and 72 hours (full notification).
• Supply chain security: Organisations must assess and manage cybersecurity risks in their supply chains, including how third-party suppliers handle access credentials.
• Heavier fines: Essential entities face fines up to €10 million or 2% of global turnover. Important entities face fines up to €7 million or 1.4% of global turnover.

NIS2 operates alongside the GDPR rather than replacing it: where GDPR protects personal data, NIS2 protects the networks and systems themselves. The guide to GDPR and password sharing covers that complementary framework.

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Which Organisations Does NIS2 Cover?

NIS2's expanded scope means a much larger population of organisations now falls under mandatory cybersecurity regulation. Covered sectors include:

Essential entities (higher scrutiny):

• Energy (electricity, oil, gas, heating, hydrogen)
• Transport (air, rail, water, road)
• Banking and financial market infrastructure
• Health (hospitals, labs, R&D, pharmaceutical manufacturing)
• Drinking water and wastewater
• Digital infrastructure (DNS, TLD registries, cloud, data centres, CDNs, trust services, telecoms)
• ICT service management (managed service providers, managed security service providers)
• Public administration

Important entities (significant but lower scrutiny):

• Postal and courier services
• Waste management
• Chemicals
• Food production and distribution
• Manufacturing (medical devices, computers, electronics, machinery, motor vehicles)
• Digital providers (marketplaces, search engines, social networks)
• Research organisations

If your organisation falls into any of these sectors and meets size thresholds (generally 50+ employees or €10M+ turnover, though essential entities include some smaller organisations by explicit designation), NIS2 applies to you.

Critically, NIS2's supply chain provisions mean that suppliers to covered organisations may also face pressure to demonstrate adequate cybersecurity practices — even if they would not independently be covered. This puts IT companies and MSPs squarely in scope, both as ICT service managers in their own right and as suppliers to covered clients.

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What NIS2 Requires for Access Management and Authentication

NIS2's Article 21 specifies the minimum cybersecurity measures all covered entities must implement. Several of these directly govern credential handling:

Access Control and Asset Management

Organisations must implement policies for access control — defining who can access which systems and under what circumstances. This has direct implications for credential sharing:

• Shared credentials to critical systems are generally incompatible with NIS2's access control requirements, because they make individual accountability impossible
• Where credentials must be temporarily shared (e.g., for onboarding, contractor access, or handover), the sharing mechanism must be documented and controlled
• Access should be revoked promptly when no longer needed

Multi-Factor Authentication

NIS2 explicitly requires the use of multi-factor authentication (MFA) or continuous authentication solutions where appropriate. This does not eliminate the need for credential sharing — MFA codes may also need to be temporarily transmitted — but it raises the security bar for systems containing sensitive data.

Basic Cyber Hygiene and Training

NIS2 requires organisations to implement cyber hygiene practices and provide cybersecurity training. An organisation whose staff routinely emails passwords or pastes credentials into chat is failing this requirement in a demonstrable way.

Encryption Policies

Covered entities must have policies governing the use of cryptography and encryption. Credentials in transit should be encrypted. Credentials stored in shared documents, spreadsheets, or email archives represent a failure of encryption policy.

Supply Chain Security

NIS2 requires organisations to address security in their supply chains. If you share credentials with contractors, technology partners, or managed service providers, you must have confidence that those credentials are handled appropriately on the receiving end. A secure sharing tool creates a clear boundary: the credential is protected in transit and destroyed after retrieval, regardless of what the recipient does with their email archive.

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NIS2 Incident Reporting and Credential Exposure

One of NIS2's most operationally demanding requirements is rapid incident reporting. Early warnings within 24 hours and full notifications within 72 hours require organisations to know quickly what happened and what systems were affected.

If credentials were shared via email, chat, or shared documents, determining the blast radius of a credential exposure is genuinely difficult:

• Which email threads contain the credential?
• Which inboxes have copies?
• Which chat archives contain it?
• Who forwarded it?
• Was the receiving mailbox also compromised?

A one-time encrypted link approach makes this much simpler. After the link has been used and the credential retrieved, the link no longer works. Credentials are not replicated across persistent storage systems. If a breach occurs, the scope of credential exposure is narrower and more definable.

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NIS2 and Management Accountability

One of NIS2's most significant departures from previous frameworks is the explicit accountability of management bodies. Article 20 requires management bodies to:

• Approve cybersecurity risk management measures
• Oversee their implementation
• Take personal responsibility for compliance

If an incident occurs and investigation reveals that the organisation's credential sharing practices were demonstrably insecure — passwords emailed in plain text, shared in chat, stored in spreadsheets — management faces potential personal liability. This is not a theoretical risk. Supervisory authorities in multiple EU member states have already indicated that management accountability provisions will be actively enforced.

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Practical Steps for NIS2 Credential Compliance

Here is a concrete action list for organisations working toward NIS2 compliance in their credential handling. If you already work with ISO 27001, much of this will map onto existing controls — password sharing software as part of your ISO 27001 toolkit shows how the two overlap.

Immediate actions:

• [ ] Audit your current credential sharing practices — document every method currently in use
• [ ] Identify credentials to NIS2-relevant systems (especially those classified as essential or important)
• [ ] Stop sharing credentials via plain-text email, unencrypted chat, or shared documents
• [ ] Deploy a purpose-built credential sharing tool for all team members who regularly share credentials

Short-term (within 30 days):

• [ ] Write a credential sharing policy that specifies approved methods, forbidden methods, and rotation requirements
• [ ] Identify all third parties (contractors, suppliers, MSPs) who receive credentials and assess their handling practices
• [ ] Implement or verify MFA on all critical systems
• [ ] Train relevant staff on the credential sharing policy and tools

Ongoing:

• [ ] Review access rights quarterly — revoke credentials no longer needed
• [ ] Include credential handling in your annual security review
• [ ] Update your incident response plan to address credential exposure scenarios
• [ ] Verify supply chain partners meet equivalent standards

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How PassTransfer Supports NIS2 Compliance

PassTransfer's architecture aligns with NIS2's core access management requirements:

• Encrypted transmission: Credentials are never in transit as plaintext
• One-time access: Credentials cannot be retrieved more than once, limiting persistent exposure
• Automatic deletion: Credentials are deleted after retrieval or expiry — no durable record in shared infrastructure
• No account required for recipients: Lower friction means staff actually use it instead of falling back to email

For organisations that share credentials with clients, contractors, or partners at scale, PassTransfer Pro adds a branded subdomain and customisable interface — presenting a professional, trust-building experience that signals security seriousness to the parties you work with.

NIS2 is not just a compliance checkbox. It is an opportunity to establish genuinely secure practices that protect your organisation, your clients, and your suppliers. Credential sharing is one of the highest-leverage places to start.

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Summary

NIS2 expands mandatory cybersecurity requirements to a much broader set of organisations than previous regulation. Its explicit requirements around access control, encryption, cyber hygiene, and supply chain security all touch directly on how credentials are shared. Management accountability provisions mean leadership cannot treat these requirements as an IT problem to delegate away.

The transition from ad-hoc credential sharing to a structured, tool-supported approach is one of the most concrete and immediately achievable steps toward NIS2 compliance. It requires no complex integration, no long implementation timeline, and no significant budget. It requires only a decision and a tool built for the purpose.