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Geraldo Fonseca Email & Phone Number
Senior Information Security Specialist
at
ONS - Operador Nacional do Sistema Elétrico
1 work email found
@yahoo.com.br
3 phones found area 198, 212, and 213
LinkedIn matched
✓ Verified Jun 2026
4 data sources
Profile completeness 86%
Current company
Role
Senior Information Security Specialist
Location
Rio De Janeiro, Rio De Janeiro, Brazil
Who is Geraldo Fonseca? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Geraldo Fonseca is listed as Senior Information Security Specialist at ONS - Operador Nacional do Sistema Elétrico, based in Rio De Janeiro, Rio De Janeiro, Brazil. AeroLeads shows a work email signal at yahoo.com.br, phone signal with area code 198, 212, 213, and a matched LinkedIn profile for Geraldo Fonseca.
Geraldo Fonseca previously worked as Latin American Advisory Council Member at Isc2 and Senior Auditor at Kraft Foods Brazil.
Company email context
Email format at ONS - Operador Nacional do Sistema Elétrico
This section adds company-level context without repeating Geraldo Fonseca's masked contact details.
*@yahoo.com.br
68% confidence
AeroLeads found 1 current-domain work email signal for Geraldo Fonseca. Compare company email patterns before reaching out.
Profile bio
About Geraldo Fonseca
Geraldo Fonseca is a Senior Information Security Specialist at ONS - Operador Nacional do Sistema Elétrico. He possess expertise in information security, information security management, iso 27001, network security, security audits and 20 more skills. He is proficient in English. Colleagues describe him as "Geraldo is a committed professional and updated with new tools. He used his knowledge to protect the company, as well as being an excellent manager."
Listed skills include Information Security, Information Security Management, Iso 27001, Network Security, and 21 others.
Current workplace
Geraldo Fonseca's current company
Company context helps verify the profile and gives searchers a useful next step.
Ons - Operador Nacional Do Sistema Elétrico
AeroLeads page
6 roles · 32 years
Geraldo Fonseca work experience
A career timeline built from the work history available for this profile.
Senior Information Security Specialist
Current
Dec 2006 - Present
Latin American Advisory Council Member
Current
Apr 2011 - Present
Senior Auditor
Jan 2005 - Sep 2006
Manager - Information Security
Oct 1998 - Sep 2003
It Infrastructure Supervisor
1994 - 1998
~4 yrs
FAQ
Frequently asked questions about Geraldo Fonseca
Quick answers generated from the profile data available on this page.
What company does Geraldo Fonseca work for?
Geraldo Fonseca works for ONS - Operador Nacional do Sistema Elétrico.
What is Geraldo Fonseca's role at ONS - Operador Nacional do Sistema Elétrico?
Geraldo Fonseca is listed as Senior Information Security Specialist at ONS - Operador Nacional do Sistema Elétrico.
What is Geraldo Fonseca's email address?
AeroLeads has found 1 work email signal at @yahoo.com.br for Geraldo Fonseca at ONS - Operador Nacional do Sistema Elétrico.
What is Geraldo Fonseca's phone number?
AeroLeads has found 3 phone signal(s) with area code 198, 212, 213 for Geraldo Fonseca at ONS - Operador Nacional do Sistema Elétrico.
Where is Geraldo Fonseca based?
Geraldo Fonseca is based in Rio De Janeiro, Rio De Janeiro, Brazil while working with ONS - Operador Nacional do Sistema Elétrico.
What companies has Geraldo Fonseca worked for?
Geraldo Fonseca has worked for Ons - Operador Nacional Do Sistema Elétrico, Isc2, Kraft Foods Brazil, Icatu Seguros, and Confederação Nacional Da Indústria (Cni).
How can I contact Geraldo Fonseca?
You can use AeroLeads to view verified contact signals for Geraldo Fonseca at ONS - Operador Nacional do Sistema Elétrico, including work email, phone, and LinkedIn data when available.
What skills is Geraldo Fonseca known for?
Geraldo Fonseca is listed with skills including Information Security, Information Security Management, Iso 27001, Network Security, Security Audits, Security, It Management, and Vulnerability Assessment.
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