The digital transformation in Cameroon presents critical cybersecurity challenges that demand immediate attention and strategic intervention. This comprehensive analysis examines the evolving cybersecurity landscape i...The digital transformation in Cameroon presents critical cybersecurity challenges that demand immediate attention and strategic intervention. This comprehensive analysis examines the evolving cybersecurity landscape in Cameroon from 2020 to 2023, during which cyber-attacks increased by 156% and financial losses from digital fraud exceeded $45 million. This research identifies significant vulnerabilities in Cameroon’s cybersecurity ecosystem through a rigorous assessment of national infrastructure, policy frameworks, and institutional capacities. Recent data indicates that while digital service adoption has grown exponentially, with internet penetration reaching 35.2% in 2023, cybersecurity measures have lagged significantly behind international standards. This analysis draws on comprehensive data from multiple sectors, including financial services, government institutions, and telecommunications, incorporating findings from the National Cybersecurity Assessment Program and the Digital Infrastructure Security Report. The research reveals that 73% of organizations lack dedicated security teams, while response times to cyber incidents average 72 hours—three times than the global standard. Based on these findings, this paper proposes evidence-based solutions for enhancing digital resilience, including policy modernization, capacity-building initiatives, and technical infrastructure development. The recommendations encompass short-term tactical responses, medium-term strategic improvements, and long-term structural changes, providing a comprehensive roadmap for strengthening Cameroon’s national cybersecurity frameworks.展开更多
The construction of pore-functionalized,charged metal-organic frameworks(MOFs)promises criticalfluorosensing of harmful organo-aromatics,toxic pollutant adsorption,and luminescent-ink based antic ounterfeiting applica...The construction of pore-functionalized,charged metal-organic frameworks(MOFs)promises criticalfluorosensing of harmful organo-aromatics,toxic pollutant adsorption,and luminescent-ink based antic ounterfeiting applications.We report the strategic construction of a non-penetrated framework,CSMCRI-4(CSMCRI=Central Salt&Marine Chemicals Research Institute),from an electron-rich tricar boxylate ligand and the lightest metal-ion,which possesses anionic[Li_(2)(COO)_(4)]secondary building units(SBUs)and unbound oxygen atom decorated porous channels.The activated MOF(4a)displays extremely selective and ultrafast luminescent sensing of the lethal 2,6-dichloro-4-nitroaniline(DCNA)pesticide and the nitrofurazone(NZF)antibiotic with notable quenching and low limits of detection.It is imperative to stress the outstanding reusability of the MOF toward multicyclic sensing of both the organo-toxins.The reversibility of the host-vip interplay between the framework and individual analytes instigatesfluor escence“off-on-off”switching,which is demonstrated by handy paper-strip monitoring.Density func tional theory(DFT)calculation portrays unprecedented reshuffing of the molecular orbital energy levels in the electron-rich MOF by each nitro-organic,and verifies the framework-analyte supramolecular inter actions.The extra-framework cations and free oxygen-atom affxed pore surface benefits selective encapsulation and sensitization of Tb^(3+)ions,which sharply change the emission color to green.The blue emission of the pristine MOF and modulated light emission in the Tb^(3+)-doped material are utilized as highly regenerable luminescent-inks for vivid acronym encryption.The framework further illustrates charge-exclusive reversible adsorption of the toxic,cationic methylene blue(MB^(+))dye through bi-phasic colorimetric variation.DFT calculation precisely delineates the replacement of the pore-occluded vip by MB+,and explicitly validates its pore-fitting induced size selectivity over other dyes.展开更多
文摘The digital transformation in Cameroon presents critical cybersecurity challenges that demand immediate attention and strategic intervention. This comprehensive analysis examines the evolving cybersecurity landscape in Cameroon from 2020 to 2023, during which cyber-attacks increased by 156% and financial losses from digital fraud exceeded $45 million. This research identifies significant vulnerabilities in Cameroon’s cybersecurity ecosystem through a rigorous assessment of national infrastructure, policy frameworks, and institutional capacities. Recent data indicates that while digital service adoption has grown exponentially, with internet penetration reaching 35.2% in 2023, cybersecurity measures have lagged significantly behind international standards. This analysis draws on comprehensive data from multiple sectors, including financial services, government institutions, and telecommunications, incorporating findings from the National Cybersecurity Assessment Program and the Digital Infrastructure Security Report. The research reveals that 73% of organizations lack dedicated security teams, while response times to cyber incidents average 72 hours—three times than the global standard. Based on these findings, this paper proposes evidence-based solutions for enhancing digital resilience, including policy modernization, capacity-building initiatives, and technical infrastructure development. The recommendations encompass short-term tactical responses, medium-term strategic improvements, and long-term structural changes, providing a comprehensive roadmap for strengthening Cameroon’s national cybersecurity frameworks.
基金the DST-SERB(grant no.ECR/2016/000156)the CSIR(grant no.MLP-0028)+3 种基金N.S.thanks the CSIR,New Delhi,India,for a research fellowship(CSIR grant no:31/028(0252)/2019-EMR-I)M.S.thanks UGC,Delhi,for providing a senior research fellowship.The analytical support from AESD&CIF(CSMCRI)and crystallographic help from Dr.E.Suresh are gratefully acknowledged.CSMCRI com munication no.32/2020R.S.P.gratefully acknowledges the DST-SERB(grant no.SRG/2019/000912)for the financial support,and the High Performance Computing Centre,SRM Institute of Science and Technology for providing the compu tational facilities.
文摘The construction of pore-functionalized,charged metal-organic frameworks(MOFs)promises criticalfluorosensing of harmful organo-aromatics,toxic pollutant adsorption,and luminescent-ink based antic ounterfeiting applications.We report the strategic construction of a non-penetrated framework,CSMCRI-4(CSMCRI=Central Salt&Marine Chemicals Research Institute),from an electron-rich tricar boxylate ligand and the lightest metal-ion,which possesses anionic[Li_(2)(COO)_(4)]secondary building units(SBUs)and unbound oxygen atom decorated porous channels.The activated MOF(4a)displays extremely selective and ultrafast luminescent sensing of the lethal 2,6-dichloro-4-nitroaniline(DCNA)pesticide and the nitrofurazone(NZF)antibiotic with notable quenching and low limits of detection.It is imperative to stress the outstanding reusability of the MOF toward multicyclic sensing of both the organo-toxins.The reversibility of the host-vip interplay between the framework and individual analytes instigatesfluor escence“off-on-off”switching,which is demonstrated by handy paper-strip monitoring.Density func tional theory(DFT)calculation portrays unprecedented reshuffing of the molecular orbital energy levels in the electron-rich MOF by each nitro-organic,and verifies the framework-analyte supramolecular inter actions.The extra-framework cations and free oxygen-atom affxed pore surface benefits selective encapsulation and sensitization of Tb^(3+)ions,which sharply change the emission color to green.The blue emission of the pristine MOF and modulated light emission in the Tb^(3+)-doped material are utilized as highly regenerable luminescent-inks for vivid acronym encryption.The framework further illustrates charge-exclusive reversible adsorption of the toxic,cationic methylene blue(MB^(+))dye through bi-phasic colorimetric variation.DFT calculation precisely delineates the replacement of the pore-occluded vip by MB+,and explicitly validates its pore-fitting induced size selectivity over other dyes.
