Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Application Security

9/5/2018
08:00 PM
100%
0%

7 Ways Blockchain is Being Used for Security

Blockchain is being used as a security tool. If you haven't thought about adopting it, you might want to reconsider your take.
Previous
1 of 8
Next

The distributed ledger of blockchain has found application in many fields, from cryptocurrency to supply chain. Much of the excitement about blockchain is due to its reputation as an inherently secure technology. But can that inherent security be applied to the field of security itself?

In a growing number of cases, the answer is "yes." Security professionals are finding that the qualities blockchain brings to a solution are effective in securing data, networks, identities, critical infrastructure, and more. As with other emerging technologies, the biggest question is not seen as whether blockchain can be used in security, but in which applications it is best used today.

Blockchain is being used in a number of security applications, ranging from record-keeping to acting as part of the active data infrastructure, and more options likely are on the horizon.

But while excitement over blockchain's potential grows, it's important to keep that potential in perspective.

One of the claims frequently made about blockchain is that it is an "un-hackable" technology. While no intrusive hacks have been demonstrated yet, it's wrong to say that blockchain can't be hacked. In early 2018, a "51% attack", in which a threat actor managed to gain control over more than half of a blockchain's compute power and corrupt the integrity of the ledger, showed that novel techniques can be effective. While this particular attack is expensive and difficult, the fact that it was effective means that security professionals should treat blockchain as a useful technology - not a magical answer to all problems.

Here are some ways blockchain is being used or considered as a security tool. 

(Image: NicoElNino)

 

Curtis Franklin Jr. is Senior Editor at Dark Reading. In this role he focuses on product and technology coverage for the publication. In addition he works on audio and video programming for Dark Reading and contributes to activities at Interop ITX, Black Hat, INsecurity, and ... View Full Bio

Previous
1 of 8
Next
Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Jesussavesme@1
50%
50%
[email protected],
User Rank: Apprentice
11/6/2018 | 12:16:34 AM
Helpful article
Thanks for your article .really helpms me a lot

https://socialprachar.com/31-10-18-what-is-blockchain-technology/?ref=sudheer
COVID-19: Latest Security News & Commentary
Dark Reading Staff 7/6/2020
Ripple20 Threatens Increasingly Connected Medical Devices
Kelly Sheridan, Staff Editor, Dark Reading,  6/30/2020
DDoS Attacks Jump 542% from Q4 2019 to Q1 2020
Dark Reading Staff 6/30/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
How Cybersecurity Incident Response Programs Work (and Why Some Don't)
This Tech Digest takes a look at the vital role cybersecurity incident response (IR) plays in managing cyber-risk within organizations. Download the Tech Digest today to find out how well-planned IR programs can detect intrusions, contain breaches, and help an organization restore normal operations.
Flash Poll
The Threat from the Internetand What Your Organization Can Do About It
The Threat from the Internetand What Your Organization Can Do About It
This report describes some of the latest attacks and threats emanating from the Internet, as well as advice and tips on how your organization can mitigate those threats before they affect your business. Download it today!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-15564
PUBLISHED: 2020-07-07
An issue was discovered in Xen through 4.13.x, allowing Arm guest OS users to cause a hypervisor crash because of a missing alignment check in VCPUOP_register_vcpu_info. The hypercall VCPUOP_register_vcpu_info is used by a guest to register a shared region with the hypervisor. The region will be map...
CVE-2020-15565
PUBLISHED: 2020-07-07
An issue was discovered in Xen through 4.13.x, allowing x86 Intel HVM guest OS users to cause a host OS denial of service or possibly gain privileges because of insufficient cache write-back under VT-d. When page tables are shared between IOMMU and CPU, changes to them require flushing of both TLBs....
CVE-2020-15566
PUBLISHED: 2020-07-07
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a host OS crash because of incorrect error handling in event-channel port allocation. The allocation of an event-channel port may fail for multiple reasons: (1) port is already in use, (2) the memory allocation failed, o...
CVE-2020-15567
PUBLISHED: 2020-07-07
An issue was discovered in Xen through 4.13.x, allowing Intel guest OS users to gain privileges or cause a denial of service because of non-atomic modification of a live EPT PTE. When mapping guest EPT (nested paging) tables, Xen would in some circumstances use a series of non-atomic bitfield writes...
CVE-2020-15563
PUBLISHED: 2020-07-07
An issue was discovered in Xen through 4.13.x, allowing x86 HVM guest OS users to cause a hypervisor crash. An inverted conditional in x86 HVM guests' dirty video RAM tracking code allows such guests to make Xen de-reference a pointer guaranteed to point at unmapped space. A malicious or buggy HVM g...