CenturyLink Communications UK Limited

CenturyLink Security Log Monitoring Service

Full suite of modular cloud services providing outsourced Security log, event and security operations centre services. SIEM platform for event correlation with audit ready use cases is automated with human review to reduce false positives and a portal dashboard allowing real-time view, search and full transparency on SOC activities.


  • Foundational monitoring and alerting complimented by optional costed service modules
  • Stand-alone service or tailored augmentation of existing assessment remediation tools
  • Risk-based automated alert process with human review to evaluate transactions
  • Role-based web portal gives real time visibility historical event analysis
  • Proactive customer notification and escalation of items of interest
  • Flexible implementation options for equipment management and monitoring
  • High fidelity event correlation from multiple data streams in real-time
  • 90 days of in system log data storage and backup
  • 24/7 support from CenturyLink’s SOC GIAC certified Intrusion Analysts
  • Simplified modular pricing model based on data volume per day


  • Fast accurate identification of threat sources enabling proactive threat management
  • Security event prioritisation and incident response reducing false positives
  • Saves hundreds of man-hours verses manual gathering of critical data
  • Comprehensive dashboard view of all network activity from multiple devices
  • Actionable insights translated and extracted from real-time and historical data
  • Speedy response to any attack and critical feedback on incidents
  • 24/7 Incident management and response team to resolve any breach
  • Compliance standards addressed via advanced portal based service reporting
  • Proactive predictive threat management with security posture improved beyond compliance
  • Mitigates against potential negative reputational impact to your organisation


£3.28 to £3.31 per megabyte per month

Service documents


G-Cloud 11

Service ID

3 1 7 1 3 2 1 8 3 0 9 3 8 7 3


CenturyLink Communications UK Limited

Martina Ebvagorou

0330 060 7103


Service scope

Software add-on or extension
Cloud deployment model
Public cloud
Service constraints
Portal service is automated information only security analytics portal
– See CenturyLink SLM Service Schedule
System requirements
  • No particular system requirements – Flexible “Carrier Agnostic” service.
  • Augments or replaces existing client SIEM / SOC services.

User support

Email or online ticketing support
Email or online ticketing
Support response times
When a ticket is opened on the CenturyLInk Incident Management System diagnosis begins into the cause. Automated notification emails can also be set up and CenturyLInk will provide updates at key milestones during the incident within the service SLA until the incident is resolved and closed. Our Service Desk and Incident Management team are available 24x365 and can be accessed via our Customer portal or via telephone.
User can manage status and priority of support tickets
Phone support
Phone support availability
24 hours, 7 days a week
Web chat support
Onsite support
Yes, at extra cost
Support levels
CenturyLink offers a financially backed availability SLA. Below 99.9% availbility (total outage, solution cannot be reached via any method) CenturyLink will credit customers monthly invoice in line with the percentage of time that the solution was unavailable (e.g. 95% availability will entitle customer to 5% credit)
Support available to third parties

Onboarding and offboarding

Getting started
Yes, customers are assigned a 'Customer Success Manager'
Service documentation
Documentation formats
  • HTML
  • PDF
End-of-contract data extraction
Not possible
End-of-contract process
Service auro renews unless cancelled

Using the service

Web browser interface
Supported browsers
  • Internet Explorer 9
  • Internet Explorer 10
  • Internet Explorer 11
  • Microsoft Edge
  • Firefox
  • Chrome
  • Safari 9+
  • Opera
Application to install
Compatible operating systems
  • Android
  • IOS
  • Linux or Unix
  • MacOS
  • Windows
  • Windows Phone
Designed for use on mobile devices
Differences between the mobile and desktop service
Service interface
Customisation available
Description of customisation
Add custom logo and custom landing page


Independence of resources
Automated services with human review provided out of multiple services geographies including London UK. Services and local data sovereignty is supported


Service usage metrics


Supplier type
Not a reseller

Staff security

Staff security clearance
Other security clearance
Government security clearance
Up to Developed Vetting (DV)

Asset protection

Knowledge of data storage and processing locations
Data storage and processing locations
  • United Kingdom
  • European Economic Area (EEA)
  • EU-US Privacy Shield agreement locations
  • Other locations
User control over data storage and processing locations
Datacentre security standards
Complies with a recognised standard (for example CSA CCM version 3.0)
Penetration testing frequency
At least once a year
Penetration testing approach
Another external penetration testing organisation
Protecting data at rest
Encryption of all physical media
Data sanitisation process
Data sanitisation type
Deleted data can’t be directly accessed
Equipment disposal approach
Complying with a recognised standard, for example CSA CCM v.30, CAS (Sanitisation) or ISO/IEC 27001

Data importing and exporting

Data export approach
Data export formats
Data import formats
Other data import formats

Data-in-transit protection

Data protection between buyer and supplier networks
IPsec or TLS VPN gateway
Data protection within supplier network
IPsec or TLS VPN gateway

Availability and resilience

Guaranteed availability
99.9% Service Availability
Approach to resilience
SLM instances are located in a number of AWS locations globally
Outage reporting
Internal testing/ usage

Identity and authentication

User authentication needed
User authentication
Username or password
Access restrictions in management interfaces and support channels
Email address and password
Access restriction testing frequency
At least every 6 months
Management access authentication
Username or password

Audit information for users

Access to user activity audit information
Users have access to real-time audit information
How long user audit data is stored for
At least 12 months
Access to supplier activity audit information
Users have access to real-time audit information
How long supplier audit data is stored for
How long system logs are stored for
At least 12 months

Standards and certifications

ISO/IEC 27001 certification
ISO 28000:2007 certification
CSA STAR certification
PCI certification
Other security certifications

Security governance

Named board-level person responsible for service security
Security governance certified
Security governance standards
ISO/IEC 27001
Information security policies and processes
CenturyLink have a strict Change management control policy in line with our ISO20k certification.
The change process workflow can be summarised as follows:
• Change creation;
• Two Stage Change Approval (Quality / Technical);
• Identification of affected customers
• Customer notification.
• Implementation (generally between 00:00 and 06:00 Local time)

Operational security

Configuration and change management standard
Supplier-defined controls
Configuration and change management approach
Centurylink have a strict Change management control policy in line with our ISO20k certification. The change process workflow can be summarised as follows: • Change creation; • Two Stage Change Approval (Quality / Technical); • Identification of affected customers • Customer notification. • Implementation (generally between 00:00 and 06:00 Local time)
Vulnerability management type
Supplier-defined controls
Vulnerability management approach
Centurylink global security team receive threat information from a number of different sources including active monitoring of Centurylink’s products and services and infrastructure, along with regular vendor vulnerability updates and information provided by communities of interest. Centurylink operate a regular patching process and maintain a dedicated vulnerability management team for the purposes of managing, review, risk management, prioritisation, and resolving vulnerabilities across all products and services provided by Centurylink.
Protective monitoring type
Supplier-defined controls
Protective monitoring approach
Centurylink operate an active protective monitoring process for it’s products, services and infrastructure which provides potential security event information and alerts to Centurylink’s multiple SOC environment for analysis. Centurylink’s SOC facilities are manned 24 x7x 365 providing as near as possible real-time response to security events with an escalation process to senior management as required.
Incident management type
Supplier-defined controls
Incident management approach
Centurylink maintain and operate a security incident process within its SOC facilities for the management of potential security incidents which manages any potential incidents to conclusion. Security incidents can arise from alerts recieved in connection with CenturyLink's products and services or by employees can raise a security breach via a dedicated portal which will then be analysed for required action. The process has defined paths of escalation and timeframes for escalation along with criteria for customer notification and response.

Secure development

Approach to secure software development best practice
Independent review of processes (for example CESG CPA Build Standard, ISO/IEC 27034, ISO/IEC 27001 or CSA CCM v3.0)

Public sector networks

Connection to public sector networks


£3.28 to £3.31 per megabyte per month
Discount for educational organisations
Free trial available

Service documents

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