Unexpected shared item
The employee cannot match the owner, file name, or workspace to a current project or relationship.
Cloud Storage Phishing Awareness
How to Recognize and Report Cloud Storage Phishing
Cloud storage phishing uses file-hosting links, sharing notices, or hosted content to lead recipients toward credential theft, malicious downloads, unwanted permissions, or deceptive business requests.
Use this guide to turn the threat into a clear employee decision, a safe practice scenario, and a reporting step your organization can support.
Plain-English definition • Warning signs • Safe simulation ideas • Reporting practice
01Understand the threat
Cloud Storage Phishing: a practical definition
Cloud storage phishing uses file-hosting links, sharing notices, or hosted content to lead recipients toward credential theft, malicious downloads, unwanted permissions, or deceptive business requests.
A link can use legitimate cloud infrastructure while the shared item or downstream destination remains deceptive. Platform familiarity does not establish sender identity or business purpose.
Source: CISA Phishing Guidance
02Recognition clues
Warning signs employees can check in a cloud storage phishing message
No single clue proves that a message is malicious. Teach employees to combine the request, sender, business context, destination, and available verification route before acting.
Multiple redirects or sign-ins
The share moves through an unfamiliar page, asks for a new application, or repeats authentication.
Unusual file or permission
The item requests download, execution, broad account access, or confidential information not required for collaboration.
03Safe response
Move from suspicion to a supported next step
| Moment | Employee action | Program preparation |
|---|---|---|
| Before acting | Open the approved cloud service independently and locate the item there, or contact the known project owner before interacting. | Publish the authentic contact, application, or reporting route somewhere employees can reach without using the message. |
| When uncertain | Pause the request and report it through the approved channel with enough context for review. | Explain what the response team needs and how employees will know that their report was received. |
| After an interaction | Stop, contact the responsible team promptly, and describe the action taken without hiding the mistake. | Provide a well-known response route and avoid communications that discourage early reporting. |
Source: NIST: Recognizing, verifying, and reporting phishing
04Practice safely
Cloud Storage Phishing simulation and discussion ideas
Choose one learning objective per exercise. Use fictional people, organizations, accounts, payments, documents, and events, and test the reporting route before sending to employees.
Known-service navigation
Ask employees to find a fictional file by opening the approved application instead of the email link.
External-share review
Practice checking the internal owner and business purpose of a guest invitation.
Hosted-form discussion
Show how legitimate hosting does not automatically make an embedded data request appropriate.
05Campaign workflow
Build the exercise around a decision employees can repeat
- 1
Define the behavior
Write down the cloud storage phishing clue being practiced, the expected action, the authorized audience, and the owner of follow-up.
- 2
Confirm the real process
Test the independent verification route, message-reporting option, response handoff, and employee support path from a representative account.
- 3
Pilot the scenario
Check delivery, links, landing content, accessibility, event records, automated inspection, stop conditions, and the explanation employees will receive.
- 4
Review in context
Reconcile intended recipients, successful deliveries, unique employee events, verified reports, response handling, and completed follow-up before drawing conclusions.
Source: NIST SP 800-50 Rev. 1: Building a Cybersecurity and Privacy Learning Program
06Useful measurement
Evaluate recognition, reporting, and the surrounding process
Record actual counts and denominators for delivery, unique recipient events, reports, and follow-up. Separate automated email inspection and repeat events where the available evidence supports doing so.
A cloud storage phishing exercise samples one scenario under one set of conditions. It does not establish an employee's intent, overall security awareness, or likelihood of responding the same way to a real attack.
Use findings to improve the real workflow: clearer verification instructions, easier reporting, faster response handling, better role-specific training, or a business control that reduces reliance on email alone.
Common questions
Common questions about Phishmake's features, onboarding, and support, answered to help you get started with confidence.
Is a link safe because it uses a well-known cloud provider?
No. Legitimate infrastructure can host unwanted content. Verify the owner, business context, requested action, and item through the known service.
What if the file is not visible in the normal application?
Avoid the message link and contact the known sender, project owner, or support route to confirm the invitation.
Can cloud storage phishing be used in a phishing simulation?
It can be practiced when the scenario is authorized, proportionate, and tied to a real reporting or verification process. Use controlled files and destinations. Do not request production permissions, create external access to real workspaces, or upload confidential or executable content.
How should cloud storage phishing simulation results be measured?
Review successful delivery, unique employee events, reports, response handling, and completed follow-up. Include scenario difficulty and operating context, and do not treat a click or report as a complete measure of employee risk.
Sources & further reading
Published by Phishmake · Updated
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Turn cloud storage phishing awareness into a repeatable response.
Use Phishmake to run controlled employee simulations, review campaign activity, assign relevant training, and keep follow-up records in one workflow.