Deloitte Company Cyber Security Posture
deloitte.comDeloitte drives progress. Our firms around the world help clients become leaders wherever they choose to compete. Deloitte invests in outstanding people of diverse talents and backgrounds and empowers them to achieve more than they could elsewhere. Our work combines advice with action and integrity. We believe that when our clients and society are stronger, so are we. Deloitte refers to one or more of Deloitte Touche Tohmatsu Limited (“DTTL”), its global network of member firms, and their related entities. DTTL (also referred to as “Deloitte Global”) and each of its member firms are legally separate and independent entities. DTTL does not provide services to clients. Please see www.deloitte.com/about to learn more. The content on this page contains general information only, and none of Deloitte Touche Tohmatsu Limited, its member firms, or their related entities (collectively the “Deloitte Network”) is, by means of this publication, rendering professional advice or services. Before making any decision or taking any action that may affect your finances or your business, you should consult a qualified professional adviser. No entity in the Deloitte Network shall be responsible for any loss whatsoever sustained by any person who relies on content from this page.
Deloitte Company Details
deloitte
478850 employees
18093253.0
541
Business Consulting and Services
deloitte.com
Scan still pending
DEL_6858677
In-progress
Deloitte Risk Score (AI oriented)Between 900 and 1000
This score is AI-generated and less favored by cyber insurers, who prefer the TPRM score.
Deloitte Global Score.png)
Deloitte Company Scoring based on AI Models
| Model Name | Date | Description | Current Score Difference | Score |
|---|---|---|---|---|
| AVERAGE-Industry | 03-12-2025 | This score represents the average cybersecurity rating of companies already scanned within the same industry. It provides a benchmark to compare an individual company's security posture against its industry peers. | N/A | Between 900 and 1000 |
Deloitte Company Cyber Security News & History
| Entity | Type | Severity | Impact | Seen | Url ID | Details | View |
|---|---|---|---|---|---|---|---|
| Deloitte | Breach | 100 | 5 | 09/2017 | DEL024111223 | Link | |
Rankiteo Explanation : Attack threatening the organization’s existenceDescription: Deloitte, an accounting business, revealed that a sophisticated breach hijacked its global email server. The Guardian initially reported the problem, which claims that hackers may have obtained usernames, passwords, and personal information of high-profile clients of prominent accounting firms in addition to emails belonging to corporate customers. Hackers have access to IP addresses, company architectural blueprints, and health data in addition to emails. Although Deloitte attempted to downplay the occurrence, it was established that it was immediately reported to government authorities and the impacted clients. In my opinion, incidents of this nature are always significant. | |||||||
| Deloitte | Cyber Attack | 100 | 4 | 09/2017 | DEL515050424 | Link | |
Rankiteo Explanation : Attack with significant impact with customers data leaksDescription: Deloitte, a leading global accountancy firm, suffered a sophisticated hack that compromised the confidential emails and plans of some of its blue-chip clients. The breach, which went unnoticed for months, allowed hackers access to Deloitte's global email server through an inadequately secured administrator account. The attack potentially exposed a vast amount of sensitive information including usernames, passwords, IP addresses, architectural diagrams, and health information. Deloitte's response involved an intensive review to determine the hack's extent and to reinforce their cybersecurity defences. Despite the breach, Deloitte asserts that the impact on clients was minimal and that there has been no disruption to client businesses or its service capacity. This incident is particularly damaging not just for the loss of confidential information but also because Deloitte offers cybersecurity advice to its clients, emphasizing the irony and seriousness of the breach. | |||||||
| Deloitte | Breach | 60 | 3 | 5/2025 | DEL716053025 | Link | |
Rankiteo Explanation : Attack with significant impact with internal employee data leaksDescription: A threat actor using the alias '303' allegedly breached Deloitte's systems and leaked sensitive internal data on a dark web forum. The breach involves GitHub credentials and source code from internal project repositories belonging to Deloitte’s U.S. consulting division. The leaked data includes GitHub credentials that could potentially grant unauthorized access to Deloitte’s internal development infrastructure, as well as source code from proprietary projects. This incident adds to Deloitte’s ongoing cybersecurity challenges, with multiple breach allegations in recent months. | |||||||
Deloitte Company Subsidiaries
Deloitte drives progress. Our firms around the world help clients become leaders wherever they choose to compete. Deloitte invests in outstanding people of diverse talents and backgrounds and empowers them to achieve more than they could elsewhere. Our work combines advice with action and integrity. We believe that when our clients and society are stronger, so are we. Deloitte refers to one or more of Deloitte Touche Tohmatsu Limited (“DTTL”), its global network of member firms, and their related entities. DTTL (also referred to as “Deloitte Global”) and each of its member firms are legally separate and independent entities. DTTL does not provide services to clients. Please see www.deloitte.com/about to learn more. The content on this page contains general information only, and none of Deloitte Touche Tohmatsu Limited, its member firms, or their related entities (collectively the “Deloitte Network”) is, by means of this publication, rendering professional advice or services. Before making any decision or taking any action that may affect your finances or your business, you should consult a qualified professional adviser. No entity in the Deloitte Network shall be responsible for any loss whatsoever sustained by any person who relies on content from this page.
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Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
Deloitte CyberSecurity History Information
How many cyber incidents has Deloitte faced?
Total Incidents: According to Rankiteo, Deloitte has faced 3 incidents in the past.
What types of cybersecurity incidents have occurred at Deloitte?
Incident Types: The types of cybersecurity incidents that have occurred incidents Breach and Cyber Attack.
How does Deloitte detect and respond to cybersecurity incidents?
Detection and Response: The company detects and responds to cybersecurity incidents through remediation measures with Intensive review and reinforcement of cybersecurity defences and law enforcement notified with Yes and communication strategy with Reported to government authorities and impacted clients.
Incident Details
Can you provide details on each incident?
Incident : Data Breach
Title: Alleged Data Breach by Threat Actor '303'
Description: A threat actor using the alias '303' allegedly claimed to have breached the company’s systems and leaked sensitive internal data on a dark web forum.
Type: Data Breach
Attack Vector: Credential Theft, Data Exfiltration
Vulnerability Exploited: GitHub Credentials
Threat Actor: 303
Incident : Data Breach
Title: Deloitte Data Breach
Description: Deloitte, a leading global accountancy firm, suffered a sophisticated hack that compromised the confidential emails and plans of some of its blue-chip clients. The breach, which went unnoticed for months, allowed hackers access to Deloitte's global email server through an inadequately secured administrator account. The attack potentially exposed a vast amount of sensitive information including usernames, passwords, IP addresses, architectural diagrams, and health information. Deloitte's response involved an intensive review to determine the hack's extent and to reinforce their cybersecurity defences. Despite the breach, Deloitte asserts that the impact on clients was minimal and that there has been no disruption to client businesses or its service capacity. This incident is particularly damaging not just for the loss of confidential information but also because Deloitte offers cybersecurity advice to its clients, emphasizing the irony and seriousness of the breach.
Type: Data Breach
Attack Vector: Inadequately secured administrator account
Vulnerability Exploited: Weak security on administrator account
Incident : Data Breach
Title: Deloitte Global Email Server Breach
Description: A sophisticated breach hijacked Deloitte's global email server, potentially compromising usernames, passwords, and personal information of high-profile clients, as well as emails, IP addresses, company architectural blueprints, and health data.
Type: Data Breach
Attack Vector: Email Server Compromise
Threat Actor: Hackers
Motivation: Data Theft
What are the most common types of attacks the company has faced?
Common Attack Types: The most common types of attacks the company has faced is Breach.
How does the company identify the attack vectors used in incidents?
Identification of Attack Vectors: The company identifies the attack vectors used in incidents through GitHub credentials, Inadequately secured administrator account and global email server.
Impact of the Incidents
What was the impact of each incident?
Incident : Data Breach DEL716053025
Data Compromised: GitHub credentials, source code from internal project repositories
Incident : Data Breach DEL515050424
Data Compromised: usernames, passwords, IP addresses, architectural diagrams, health information
Systems Affected: Global email server
Brand Reputation Impact: Significant
Incident : Data Breach DEL024111223
Data Compromised: usernames, passwords, personal information, emails, IP addresses, company architectural blueprints, health data
Systems Affected: global email server
What types of data are most commonly compromised in incidents?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are GitHub credentials, source code, usernames, passwords, IP addresses, architectural diagrams, health information, usernames, passwords, personal information, emails, IP addresses, company architectural blueprints and health data.
Which entities were affected by each incident?
Incident : Data Breach DEL716053025
Entity Type: Consulting Firm
Industry: Consulting
Location: United States
Incident : Data Breach DEL515050424
Entity Type: Accountancy Firm
Industry: Financial Services
Location: Global
Size: Large
Customers Affected: Blue-chip clients
Incident : Data Breach DEL024111223
Entity Type: Accounting Firm
Industry: Accounting
Customers Affected: high-profile clients, corporate customers
Response to the Incidents
What measures were taken in response to each incident?
Incident : Data Breach DEL515050424
Remediation Measures: Intensive review and reinforcement of cybersecurity defences
Incident : Data Breach DEL024111223
Law Enforcement Notified: Yes
Communication Strategy: Reported to government authorities and impacted clients
Data Breach Information
What type of data was compromised in each breach?
Incident : Data Breach DEL716053025
Type of Data Compromised: GitHub credentials, source code
Sensitivity of Data: High
Data Exfiltration: True
File Types Exposed: Source code files
Incident : Data Breach DEL515050424
Type of Data Compromised: usernames, passwords, IP addresses, architectural diagrams, health information
Sensitivity of Data: High
Incident : Data Breach DEL024111223
Type of Data Compromised: usernames, passwords, personal information, emails, IP addresses, company architectural blueprints, health data
Sensitivity of Data: High
Personally Identifiable Information: Yes
What measures does the company take to prevent data exfiltration?
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: Intensive review and reinforcement of cybersecurity defences.
References
Where can I find more information about each incident?
Incident : Data Breach DEL716053025
Source: Cybersecurity monitoring services
Incident : Data Breach DEL024111223
Source: The Guardian
Where can stakeholders find additional resources on cybersecurity best practices?
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: Cybersecurity monitoring services, and Source: The Guardian.
Investigation Status
What is the current status of the investigation for each incident?
Incident : Data Breach DEL716053025
Investigation Status: Ongoing
How does the company communicate the status of incident investigations to stakeholders?
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through was Reported to government authorities and impacted clients.
Initial Access Broker
How did the initial access broker gain entry for each incident?
Incident : Data Breach DEL716053025
Entry Point: GitHub credentials
Incident : Data Breach DEL515050424
Entry Point: Inadequately secured administrator account
Incident : Data Breach DEL024111223
Entry Point: global email server
High Value Targets: high-profile clients, corporate customers
Data Sold on Dark Web: high-profile clients, corporate customers
Additional Questions
General Information
Who was the attacking group in the last incident?
Last Attacking Group: The attacking group in the last incident were an 303 and Hackers.
Impact of the Incidents
What was the most significant data compromised in an incident?
Most Significant Data Compromised: The most significant data compromised in an incident were GitHub credentials, source code from internal project repositories, usernames, passwords, IP addresses, architectural diagrams, health information, usernames, passwords, personal information, emails, IP addresses, company architectural blueprints and health data.
What was the most significant system affected in an incident?
Most Significant System Affected: The most significant system affected in an incident was Global email server and global email server.
Data Breach Information
What was the most sensitive data compromised in a breach?
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were GitHub credentials, source code from internal project repositories, usernames, passwords, IP addresses, architectural diagrams, health information, usernames, passwords, personal information, emails, IP addresses, company architectural blueprints and health data.
References
What is the most recent source of information about an incident?
Most Recent Source: The most recent source of information about an incident are Cybersecurity monitoring services and The Guardian.
Investigation Status
What is the current status of the most recent investigation?
Current Status of Most Recent Investigation: The current status of the most recent investigation is Ongoing.
Initial Access Broker
What was the most recent entry point used by an initial access broker?
Most Recent Entry Point: The most recent entry point used by an initial access broker were an GitHub credentials, Inadequately secured administrator account and global email server.
What Do We Measure?
Every week, Rankiteo analyzes billions of signals to give organizations a sharper, faster view of emerging risks. With deeper, more actionable intelligence at their fingertips, security teams can outpace threat actors, respond instantly to Zero-Day attacks, and dramatically shrink their risk exposure window.
These are some of the factors we use to calculate the overall score:
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
