Secure Sharing Practices
Share files safely without creating security gaps.
What Is Secure Sharing Practices?
Every file you send is a decision about who can reach it later. This exercise runs the sharing cases that carry more risk than they look: a contract with financial terms going to outside counsel, customer data crossing offices, a document shared with a vendor on a different platform, a file too big for email. You choose a method each time and see the consequences, including why a password-protected expiring link is not the same as an unencrypted attachment.
What You'll Learn in Secure Sharing Practices
- Select the appropriate sharing method for different data types by evaluating sensitivity level, recipient, and available approved tools
- Configure file-sharing links with proper permission settings including view-only access, expiration dates, and password protection
- Identify when email attachments require encryption and apply basic encryption practices for sensitive documents
- Recognize shadow IT risks when colleagues use unauthorized sharing tools and redirect to approved alternatives without disrupting workflows
- Verify recipient identity and authorization before sharing confidential or restricted data with external parties including vendors, partners, and legal counsel
Secure Sharing Practices — Training Steps
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A Busy Week at Catalyst Ventures
Today is particularly hectic — the Q3 audit window closes at 5 PM and the external auditor still hasn't received the financial report.
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The Urgent Request
Alice receives an urgent message from her manager Marcus Chen on Telegram.
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Accessing SecureShare
Under pressure to meet the 5 PM deadline, Alice opens the Catalyst SecureShare portal to send the report as quickly as possible.
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Selecting the File
The SecureShare portal displays Alice's files. She needs to select the Q3 Financial Report to share with the auditor.
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Setting the Recipient
Alice needs to enter the auditor's email address from Marcus's message.
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Quick Share Settings
The sharing configuration page appears. Alice is in a rush — she picks the most permissive options without thinking: 'Full Control' access, 'Anyone with the link' visibility, 'Never' for expiration, and hits Share Now.
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Confirmation
Steve confirms he got the report. Deadline met, crisis averted. Or so Alice thinks.
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Something Is Wrong
Three weeks later, Alice arrives at work to find an urgent email from the IT Security team. Her stomach drops as she reads the subject line.
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The Audit Log
Alice clicks the link to the audit log, dreading what she'll find.
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What Went Wrong
Three critical failures turned a routine file share into a catastrophic data exposure: 1. Full Control access. The auditor only needed to view the report, but Alice gave Full Control — allowing anyone with the link to download, edit, or redistribute the file. 2. No access controls. 'Anyone with the link' means anyone who obtains the URL can access the file — no authentication required. The link was forwarded, shared, and eventually posted publicly. 3. No expiration or password. A link that never expires and requires no password is a permanent, unprotected gateway to sensitive data. Once it's out, there's no way to contain it.
Security Framework Coverage
CWE
- CWE-732 Incorrect Permission Assignment for Critical Resource
- CWE-668 Exposure of Resource to Wrong Sphere
CIS Controls
- CIS 3 Data Protection
- CIS 14.4 Train Workforce on Data Handling Best Practices
NIST CSF
- PR.AT-01 Personnel are provided with awareness and training so that they possess the knowledge and skills to perform general tasks with cybersecurity risks in mind
- PR.DS Data Security