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Dennis Sysko

Practice areas


  1. Corporate: 35%
    40 years, 80 cases
  2. Administrative Law: 35%
    27 years, 150 cases
  3. Government: 30%
    40 years, 50 cases



Retainer (always)

Payment types:

Cash, Check, Credit card

Attorney endorsements

3 total 

Are you an attorney? Endorse this lawyer

  • Peter John Marek

    38 years of practicing law is extremely experienced. A law professor with 26 years spent with the NSA and 12 plus in private practice is a niche where few attorneys can practice due to the security clearances required. Dennis knows the law and procedure which is clearly evident in his pro bono contributions here and the fact that he teaches law. His client reviews are stellar. READ THEM! Do yourself a favor and call him for a consultation. If you are lucky he might agree to take your case. KUDOS


    Peter Marek Criminal defense Attorney
    Relationship: Fellow lawyer in community

  • Brian Christopher Schmitt

    I fully endorse Dennis Sysko. I worked with Dennis on a highly complex immigration matter that touched on national security matters. I handled the immigration aspects of the case, where he provided an exceptional expert opinion on the national security/security clearance aspect of the case. His knowledge in this niche area is unsurpassed. I believe his expert opinion won the day in our case. I enthusiastically recommend him to anyone facing a security clearance issue.


    Brian Schmitt Immigration Attorney
    Relationship: Worked together on matter

Contact info

306 Crain Hwy N
Glen Burnie, MD, 21061-3007


DCActive 197907/10/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
BV RatedMartindale-Hubbell2014
Work experience
TitleCompany nameDuration
Senior PartnerHenault & Sysko, Chartered1980 - Present
Adjunct ProfessorUniversity of Baltimore School of Law1999 - 2006
N/ANational Security Agency1970 - 1996
Association namePosition nameDuration
The Society of Industrial Security ProfessionalsMember2012 - Present
Association of Former Intelligence Officers (AFIO)Member2009 - Present
Fort Meade AllianceMember2007 - Present
Chesapeake Regional Tech CouncilMember2004 - Present
Anne Arundel County Bar FoundationDirector2002 - Present
District of Columbia AssociationMember1980 - Present
Anne Arundel County Bar AssociationMember1977 - Present
Maryland State Bar AssociationMember1977 - Present
Anne Arundel County High Tech CouncilPresident2002 - 2004
Legal cases
Case nameOutcome
Defense Office of Hearings and Appeals (DOHA) ISCR Case No. 10-08186Financial - Administrative Judge found the Applicant was an acceptable security risk and granted him access to classified information.
Defense Office of Hearings and Appeals (DOHA) ISCR Case No. 10-03423Foreign Influence/Preference - Administrative Judge found granting the applicant access to classified information was clearly consistent with national security.
Defense Office of Hearings and Appeals (DOHA) ISCR Case No. 14-03016DUI/Alcohol - Administrative Judge found granting the applicant access to classified information was clearly consistent with national security.
See all legal cases 
Publication nameTitleDate
Recent Trends in National Security LawChapter: Understanding National Security Clearance Law2014
Maryland Administration for Justice - Trial ReporterSecurity Clearances - What Counsel Should Know2013
School nameMajorDegreeGraduated
University of Baltimore School of LawLawJD - Juris Doctor1976
University of New HavenElectrical EngineeringB.S.E.E.1970
Speaking engagements
Conference nameTitleDate
Anne Arundel County, MD Bar WeekendEffect of Criminal Dispositions on Security Clearances2015
B2GPerspectives on B-2-G National Security Sector2012
DoD Mentor-Protege ConferenceClassified Contracts and Security Clearances2009
Service-Disabled Veteran-Owned Business NetworkSecurity Clearances2008