Amieltech LLC

IT Support

Linux, BSD, Cisco, Windows

Nombre: Amiel

Telefono : 1-787-222-7106

Email : mail at amiel.me

pk (cell/tablet): B644 1F2E 49E8 C0D2

AA20-073A: Enterprise VPN Security

Original release date: March 13, 2020

Summary

As organizations prepare for possible impacts of Coronavirus Disease 2019 (COVID-19), many may consider alternate workplace options for their employees. Remote work options—or telework—require an enterprise virtual private network (VPN) solution to connect employees to an organization’s information technology (IT) network. As organizations elect to implement telework, the Cybersecurity and Infrastructure Security Agency (CISA) encourages organizations to adopt a heightened state of cybersecurity.

Technical Details

The following are cybersecurity considerations regarding telework.

Mitigations

CISA encourages organizations to review the following recommendations when considering alternate workplace options.

References

Revisions


This product is provided subject to this Notification and this Privacy & Use policy.

AA20-049A: Ransomware Impacting Pipeline Operations

Original release date: February 18, 2020

Summary

Note: This Activity Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK™) framework. See the MITRE ATT&CK for Enterprise and ATT&CK for Industrial Control Systems (ICS) frameworks for all referenced threat actor techniques and mitigations.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages asset owner operators across all critical infrastructure sectors to review the below threat actor techniques and ensure the corresponding mitigations are applied.

CISA responded to a cyberattack affecting control and communication assets on the operational technology (OT) network of a natural gas compression facility. A cyber threat actor used a Spearphishing Link [T1192] to obtain initial access to the organization’s information technology (IT) network before pivoting to its OT network. The threat actor then deployed commodity ransomware to Encrypt Data for Impact [T1486] on both networks. Specific assets experiencing a Loss of Availability [T826] on the OT network included human machine interfaces (HMIs), data historians, and polling servers. Impacted assets were no longer able to read and aggregate real-time operational data reported from low-level OT devices, resulting in a partial Loss of View [T829] for human operators. The attack did not impact any programmable logic controllers (PLCs) and at no point did the victim lose control of operations. Although the victim’s emergency response plan did not specifically consider cyberattacks, the decision was made to implement a deliberate and controlled shutdown to operations. This lasted approximately two days, resulting in a Loss of Productivity and Revenue [T828], after which normal operations resumed. CISA is providing this Alert to help administrators and network defenders protect their organizations against this and similar ransomware attacks.

Technical Details

Network and Assets

Planning and Operations

Mitigations

Asset owner operators across all sectors are encouraged to consider the following mitigations using a risk-based assessment strategy.

Planning and Operational Mitigations

Technical and Architectural Mitigations

Resources

Revisions


This product is provided subject to this Notification and this Privacy & Use policy.



Atlanta Computer Repair Center, Metro Atlanta Computer Repair, Data Recovery, Atlanta Computer Service, Computer Troubleshooting, hardware upgrades, Wireless Internet, Wireless Network, Home Office Computer Setup, Atlanta Computer Repair Center, Providing On-Site Computer Repairs, Virus Removals, Data Recovery, Computer Upgrades in the Metro Atlanta Areas, Atlanta's Premier Laptop Repairs. We Build Custom Computers, Wireless Networking, Data Recovery, and Virus / Spyware Removals. Serving the entire Metro Atlanta Area. Home or Office Computer Repair, Virus Removal, Hardware Installations, Software Installations, Windows XP Troubleshooting, Printer Troubleshooting, Wireless Networking, Wireless Internet, Virus Protection, Speed up Computer, Acworth computer repair, Alpharetta computer repair, Atlanta computer repair, Buckhead computer repair, Chamblee computer repair, Doraville computer repair, Kennesaw computer repair, Marietta computer repair, Norcross computer repair, Roswell computer repair, Sandy Springs computer repair, Windows, Smyrna computer repair, Woodstock computer repair, Linux, Debian Linux, Treasure Coast Ubuntu, dell computer repair, HP computer repair, Compaq computer repair, Toshiba computer repair, Sony computer repair, Samsung computer repair, Gateway computer repair, Emachines computer repair, IBM computer repair, Acer computer repair, Computer, repair, repairs, service, pc repairs, custom, system, pc, onsite, home, repairs, help, guru, business, company, technician, network, crash, maintenance, contract, repairs, virus repair, treasure coast computer repair, virus removal, preventive maintenance, tech support, Open BSD, computer cleaning service, at home, Free BSD, service center, repair price, on site, specialist, compaq, dell, gateway, upgrade, upgrades, in home, support, search engine guru, on-site, cpu, amiel, amiel summers, business, georgia, east atlanta, fulton county,cobb county, dekalb county,atlanta, GA

¹²³