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opswat.com
article
https://www.opswat.com/blog/common-cloud-vulnerabilities-security-risks-expla…
### Q: What are the most common cloud vulnerabilities?
Some of the most common cloud vulnerabilities include misconfigured cloud storage or services, weak or stolen credentials, insecure APIs, unpatched software or systems, or insufficient access controls.
### Q: How secure is the cloud? [...] Cloud vulnerabilities are security weaknesses or gaps in cloud computing environments, usually stemming from misconfigurations, poor access controls, lack of visibility, or even the use of insecure APIs.
These cloud security issues are continuously sought after by attackers, as they can be easily exploited for unauthorized network and data access. [...] Organizations often rely on cloud storage solutions to keep their customer records, proprietary information, or operational data.
Thus, a breach can mean the theft of personal identities, financial information, intellectual property, or even trade secrets.
Beyond the immediate effects, such incidents can also lead to long-term reputational damage and a breakdown of customer trust.
Affected individuals may abandon services, and partners may reconsider business relationships.
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wiz.io
article
https://www.wiz.io/academy/cloud-security/common-cloud-vulnerabilities
Ultimately, cloud misconfigurations are among the main attack vectors for data breaches. Common ones include open ports for outbound server traffic, overprivileged identities, a lack of monitoring, unsecured storage (like open S3 buckets), the use of default passwords and credentials, and third-party misconfigurations.
Real-life example: [...] ## The 11 cloud security vulnerabilities you’re sure to encounter
The most common cloud security vulnerabilities include the following:
Misconfigurations
Lack of visibility
Poor access management
Insider threats
Unsecured APIs
Zero-days
Shadow IT
Lack of encryption
Inadequate segmentation
Vulnerable dependencies
Deficient logging and monitoring [...] When you encrypt data, you transform it into a format that users can only read if they have the encryption key. Because of this, even if unauthorized individuals obtain the encrypted data, they can’t decipher it. A lack of encryption, however, presents a significant vulnerability in cloud storage since it allows unauthorized individuals to access sensitive data if they infiltrate the cloud environment.
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darktrace.com
article
https://www.darktrace.com/cyber-ai-glossary/the-most-common-cloud-security-th…
Misconfigurations in cloud environments are among the most common and critical security risks. These occur when cloud resources, such as storage buckets, databases, or virtual machines, are set up with weak security controls or improper access permissions. Examples include leaving storage buckets open to the public, not enabling encryption, or failing to configure identity and access management (IAM) settings correctly. These misconfigurations can expose sensitive data and cloud infrastructure [...] When data is improperly stored or transmitted without proper security protocols, attackers can exploit these vulnerabilities to access confidential information. This can result in significant financial losses, regulatory penalties, and reputational damage, especially as cloud services often store vast amounts of critical customer and business data across global locations.
### 2. Account hijacking [...] In cloud environments, data breaches often occur when misconfigurations, weak access controls, or inadequate encryption expose sensitive information to unauthorized parties. Unlike traditional on-premise breaches, cloud data breaches can involve multiple layers of shared responsibility, where both the cloud provider and the user play a role in securing the environment.
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sysdig.com
article
https://www.sysdig.com/learn-cloud-native/top-cloud-vulnerabilities-and-mitig…
## Mitigate these cloud vulnerabilities to improve security posture
More and more cloud data breaches and malicious attacks are due to threat actors exploiting common cloud vulnerabilities given how prevalent critical vulnerabilities are and the time it takes to remediate them.
The vulnerabilities discussed here are those that cause gaps in cloud security, which includes misconfigurations, poor identity controls, and common vulnerabilities and exposures (CVE). [...] Open public-facing storage or infrastructure: Business-critical data is too often stored in S3 buckets and other cloud storage accidentally, or without proper security measures, and then forgotten. ID verification firm Persona had its entire dashboard codebase exposed recently to the public.
Open ICMP access:The Internet Control Message Protocol (ICMP) manages error reporting for IP networks, but attackers can use it as an attack vector for distributed denial-of-service (DDoS) attacks. [...] So, it’s important to understand the common cloud vulnerabilities and risks that exist and a few steps you can take to mitigate or prevent them. Lastly, we offer some general best practices for reducing cloud vulnerabilities.
## 1. Misconfigurations
Misconfigurations are the bane of security practitioners everywhere. From publicly exposing storage or S3 buckets to improperly implementing firewall rules, misconfigurations are an unfortunately common cause of security incidents.
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crowdstrike.com
article
https://www.crowdstrike.com/en-us/cybersecurity-101/cloud-security/cloud-vuln…
## #8: Human error
According to the Thales Global Cloud Security Study, human action was responsible for 44% of cloud data breaches reported incidents. These errors can take many forms, including misconfigurations and access management issues. Many of these vulnerabilities are caused by limited knowledge about security best practices or poor strategic planning.
To minimize this threat:
Train your DevOps team, sysadmins, and managers on cloud security best practices. [...] Always have your data storage set to private by default for your cloud resource.
When using Terraform or another infrastructure as code (IaC) framework, make sure to have an established IaC file review process.
Always use HTTPS instead of HTTP. The same goes for any other protocol; for example, you should use SFTP instead of FTP. You should also use the latest version of SSL/TLS.
Restrict all inbound and outbound ports if they are not needed for a given machine fronted on the internet. [...] Cloud misconfigurations are one of the most common vulnerabilities organizations face. Misconfigurations can range from excessive account permissions to insecure backups, and they are often caused by speed of deployment, limited knowledge of good practices, or a lack of comprehensive visibility into cloud infrastructure.
To minimize this threat:
Use third-party tools to scan your infrastructure and quickly identify misconfigurations that pose an active risk in production.
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coursera.org
article
https://www.coursera.org/articles/cloud-data-security
Read more: 4 Cloud Computing Career Paths to Know
## How secure is your data in the cloud? Dangers of cloud data storage
Although there are many benefits to cloud data storage, there are also many potential dangers to their security that both organizations and individuals should consider. Some of the most common threats include:
### 1. Data breaches and misconfigurations [...] Hackers and other bad actors are a major threat to the cybersecurity of both on-premise and cloud-based data storage. In fact, according to IBM’s Cost of a Data Breach Report 2025, the average cost of a data breach reached a whopping $4.4 million in 2025 . While many attacks simply rely on run-of-the-mill phishing schemes or stolen credentials, a significant amount of these attacks exploit all-too-common cloud misconfigurations within an organization.
### 2. Insecure APIs [...] Cybersecurity professionals work to ensure an organization’s cloud data security by establishing numerous best practices and protocols that limit the potential for bad actors to gain unauthorized access to sensitive data. Some common ways to protect data stored in the cloud include encrypting it, enabling multi-factor authentication (MFA), and establishing employee training programs to limit any breaches resulting from human error.
### What is the cloud?
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proofpoint.com
article
https://www.proofpoint.com/us/threat-reference/cloud-security
Cloud security is essential in helping organizations address specific vulnerabilities and threats. Employee negligence or lack of training can create cloud security threats, such as oversharing files via public links that anyone can access. Data theft by insiders is also common. For example, salespeople leaving a company can steal data from cloud CRM services. [...] Cyber criminals often exploit vulnerabilities and weaknesses in cloud security to gain access to valuable data and assets. Once attackers access cloud account credentials, they impersonate legitimate users. They can trick your people into wiring money to them or releasing corporate data. They can also hijack email accounts to distribute spam and phishing emails. [...] Cyber criminals tend to target popular SaaS applications like Microsoft Office 365 and Google G Suite. Just about everyone at your company uses these applications, which hold the key to business communication and vital data. Attackers use a variety of techniques and exploit several vulnerabilities to compromise cloud account credentials and take advantage of vulnerable users, including:
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tierpoint.com
article
https://www.tierpoint.com/blog/cybersecurity/cloud-storage-security
While cloud storage offers ease of use and simple scalability, it can also come with new risks that can be more common in the cloud. Here are some of the top cloud-related security threats and risks to keep on your radar.
An infographic of cloud storage security risks
An infographic of cloud storage security risks
### Malware and Ransomware [...] Bad actors gain access to your confidential, sensitive, and valuable information through data breaches. While ransomware is one method cybercriminals may attack the software supply chain or enter through a business partner. Initial attack vectors can include zero-day vulnerabilities, cloud misconfigurations, system errors, or even malicious insiders. The most common starting attack vectors in 2023 were phishing and stolen or compromised credentials.
### Insider Threats [...] Data that is only available in one place will always be more vulnerable than data that has a backup somewhere. Regularly backing up data to a separate location, especially one that is geographically distinct, can protect businesses from data breaches, natural disasters, accidental deletion, and more.